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A.E. Abasaeed
Chemical Engineering Department, College of Engineering King Saud University Riyadh Saudi Arabia

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Research article
Published: 14 July 2021 in International Journal of Energy Research
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Ceria promoted phosphate-zirconia supported nickel catalyst (10Ni1Ce/PZr; x = 0, 1, 1.5, 2, 2.5, 3, 5 wt%) are prepared and characterized by XRD, SEM, SEM-EDX, CH4-TPSR, NH3-TPD, cyclic H2TPR-CO2TPD-H2TPR, and TPH. Ceria addition induces surface reducibility, exposes reduced phases of NiO and Ni2P2O7 as CH4 decomposition sites, and persuades additional CO2 adsorbed species as formate species over the catalyst surface. It also switches mobile oxygen in the lattice and thereafter oxide vacancy is replenished by oxygen from CO2 to a great extent. Altogether, 1 wt% ceria loading (10Ni1Ce/PZr) ensures more than 90% H2 yield (H2/CO = 0.96) whereas 2 wt% ceria loading inputs constancy in catalytic performance up to 440 min TOS. Up to 3 wt% ceria loading, 97% hydrogen yield (H2/CO ~1) is observed. Catalytic performance deteriorated above that 3 wt% ceria loading due to shading the catalytic active site or reoxidation of metallic nickel by excess ceria.

ACS Style

Jyoti Khatri; Anis Hamza Fakeeha; Samsudeen Olajide Kasim; Mahmud S. Lanre; Ahmed E. Abasaeed; Ahmed Aidid Ibrahim; Rawesh Kumar; Ahmed Sadeq Al‐Fatesh. Ceria promoted phosphate‐zirconia supported Ni catalyst for hydrogen rich syngas production through dry reforming of methane. International Journal of Energy Research 2021, 1 .

AMA Style

Jyoti Khatri, Anis Hamza Fakeeha, Samsudeen Olajide Kasim, Mahmud S. Lanre, Ahmed E. Abasaeed, Ahmed Aidid Ibrahim, Rawesh Kumar, Ahmed Sadeq Al‐Fatesh. Ceria promoted phosphate‐zirconia supported Ni catalyst for hydrogen rich syngas production through dry reforming of methane. International Journal of Energy Research. 2021; ():1.

Chicago/Turabian Style

Jyoti Khatri; Anis Hamza Fakeeha; Samsudeen Olajide Kasim; Mahmud S. Lanre; Ahmed E. Abasaeed; Ahmed Aidid Ibrahim; Rawesh Kumar; Ahmed Sadeq Al‐Fatesh. 2021. "Ceria promoted phosphate‐zirconia supported Ni catalyst for hydrogen rich syngas production through dry reforming of methane." International Journal of Energy Research , no. : 1.

Journal article
Published: 08 July 2021 in Catalysts
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Dry reforming of methane (DRM) has a substantial potential to provide a cost-effective process and in reducing greenhouse gases. Its application has been hindered by carbon deposition and instability problems. The use of an appropriate catalyst is influenced by the support type. The objective of this investigation is to elucidate the effect of different sources of ZrO2 support. Four kinds of ZrO2, namely RC-100 and Z-3215, MKnano, and ELTN were acquired from Japan, Canada, and China, respectively. The catalyst samples were analyzed by BET, XRD, TPR, TPD, TEM, TGA, TPO, FT-IR, and Raman. The analysis of the structural properties displayed that all Ni-supported catalysts, regardless of their source, are mesoporous and that 5Ni-RC-100 possessed the highest BET surface area of 17.7 m2/g and 5Ni-MKnano had the lowest value of BET 3.16 m2/g. In the TPD and TEM analysis, the 5Ni-RC-100 catalyst presented the highest intensity of basicity and the minimum average particle size of 3.35 nm, respectively. The 5Ni-RC-100 catalyst outperformed 5Ni-ELTN by exhibiting 44% higher CH4 conversion; however, 5Ni-RC-100 gave the highest weight loss in the TGA analysis of 66%.

ACS Style

Ahmed Ibrahim; Anis Fakeeha; Ahmed Abasaeed; Ahmed Al-Fatesh. Dry Reforming of Methane Using Ni Catalyst Supported on ZrO2: The Effect of Different Sources of Zirconia. Catalysts 2021, 11, 827 .

AMA Style

Ahmed Ibrahim, Anis Fakeeha, Ahmed Abasaeed, Ahmed Al-Fatesh. Dry Reforming of Methane Using Ni Catalyst Supported on ZrO2: The Effect of Different Sources of Zirconia. Catalysts. 2021; 11 (7):827.

Chicago/Turabian Style

Ahmed Ibrahim; Anis Fakeeha; Ahmed Abasaeed; Ahmed Al-Fatesh. 2021. "Dry Reforming of Methane Using Ni Catalyst Supported on ZrO2: The Effect of Different Sources of Zirconia." Catalysts 11, no. 7: 827.

Journal article
Published: 05 June 2021 in Molecular Catalysis
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Hydrogen production through CH4 and CO2 over nickel based supported catalyst system is not only a catalytic achievement but also a step towards fulfilling environmental goals of reducing global warming. Yttria is known for its stabilization of ZrO2 as well as involvement of O2− species in lattice. Herein, yttria-zirconia supported Ni catalyst system is utilized for hydrogen production through dry reforming of methane. It is characterized thoroughly by x-ray diffraction, infrared spectroscopy, ultraviolet spectroscopy and x-ray photoelectron microscopy. The spent catalysts are also characterized by temperature-programmed oxidation (TPO) and X-ray photoelectron microscopy. Ni-15Y-ZrO2 is quite thermally stable and it has a wide range of basic sites for CO2 adsorption and highest density of O2− species/lattice oxygen for carbon deposit oxidation. It gives the highest H2 yield (67.5%) that drops slowly to 63.7% during 420 min. Ni-20Y-ZrO2 catalyst activity is more or less same until 210 min. At high reaction temperature 800 °C, Ni-20Y-ZrO2 also shows a slow rise of H2 yield (69%) but Ni-15Y-ZrO2 shows a steep rise in H2 yield (78%).

ACS Style

Rutu Patel; Anis H. Fakeeha; Samsudeen O. Kasim; Mahmud L. Sofiu; Ahmed A. Ibrahim; Ahmed E. Abasaeed; Rawesh Kumar; Ahmed S. Al-Fatesh. Optimizing yttria-zirconia proportions in Ni supported catalyst system for H2 production through dry reforming of methane. Molecular Catalysis 2021, 510, 111676 .

AMA Style

Rutu Patel, Anis H. Fakeeha, Samsudeen O. Kasim, Mahmud L. Sofiu, Ahmed A. Ibrahim, Ahmed E. Abasaeed, Rawesh Kumar, Ahmed S. Al-Fatesh. Optimizing yttria-zirconia proportions in Ni supported catalyst system for H2 production through dry reforming of methane. Molecular Catalysis. 2021; 510 ():111676.

Chicago/Turabian Style

Rutu Patel; Anis H. Fakeeha; Samsudeen O. Kasim; Mahmud L. Sofiu; Ahmed A. Ibrahim; Ahmed E. Abasaeed; Rawesh Kumar; Ahmed S. Al-Fatesh. 2021. "Optimizing yttria-zirconia proportions in Ni supported catalyst system for H2 production through dry reforming of methane." Molecular Catalysis 510, no. : 111676.

Journal article
Published: 18 May 2021 in Catalysts
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Chromium oxide supported on mesoporous organo-silica (MOS) was synthesized with different Cr loading by an incipient method. The catalytic performance of a Cr(x)/MOS catalyst for CO2-based ethane dehydrogenation was investigated. The synthesized catalysts were characterized by XRD, BET, TEM, SEM, XPS, FTIR, and UV–Vis DR measurements. The textural properties of the prepared samples showed that the mesoporous nature of MOS sample was not disturbed by chromium impregnation. Among the prepared samples, Cr(8)/MOS catalyst exhibited good distribution of chromium species along with superior concentration of Cr6+ and the highest recorded Cr6+/Cr3+ ratio. The results revealed that the superior catalytic performance was reached at Cr(8)/MOS, with 50.4% and 90.1% of ethane conversion and ethylene selectivity, respectively. The catalytic activity decreased slowly over reaction time; it declined approximately 22% after 10 h of stream operation. The roles of CO2-based ethane dehydrogenation were also studied, where carbon dioxide can be a source of lattice oxygen and as a hydrogen consumer in reverse water–gas shift (RWGS) reaction. The effect of various catalytic factors, such as catalytic temperature, reaction time, space gas velocity, and CO2 partial pressure on the conversion of ethane, yield, and selectivity to ethylene, were investigated as well.

ACS Style

Abdulrhman Al-Awadi; Ahmed El-Toni; Joselito Labis; Aslam Khan; Hamid Ghaithan; Attiyah Al-Zahrani; Ahmed Abasaeed; Saeed Al-Zahrani. Mesoporous Organo-Silica Supported Chromium Oxide Catalyst for Oxidative Dehydrogenation of Ethane to Ethylene with CO2. Catalysts 2021, 11, 642 .

AMA Style

Abdulrhman Al-Awadi, Ahmed El-Toni, Joselito Labis, Aslam Khan, Hamid Ghaithan, Attiyah Al-Zahrani, Ahmed Abasaeed, Saeed Al-Zahrani. Mesoporous Organo-Silica Supported Chromium Oxide Catalyst for Oxidative Dehydrogenation of Ethane to Ethylene with CO2. Catalysts. 2021; 11 (5):642.

Chicago/Turabian Style

Abdulrhman Al-Awadi; Ahmed El-Toni; Joselito Labis; Aslam Khan; Hamid Ghaithan; Attiyah Al-Zahrani; Ahmed Abasaeed; Saeed Al-Zahrani. 2021. "Mesoporous Organo-Silica Supported Chromium Oxide Catalyst for Oxidative Dehydrogenation of Ethane to Ethylene with CO2." Catalysts 11, no. 5: 642.

Journal article
Published: 23 April 2021 in Journal of Saudi Chemical Society
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The present work describes the use of yttria stabilized ZrO2 support. Different loadings (5, 10, 15 and 20 wt%) of yttria were used. The catalysts were tested for CH4 reforming with CO2 at 700 °C. The effect of doping Y2O3 with ZrO2 on the catalytic performance was attained. N2 physisorption (BET), X-ray diffraction (XRD), temperature programmed reduction (TPR), thermogravimetric analysis (TGA), and transmission electron microscopy (TEM) were employed to analyze the used and fresh catalysts. The results showed that Y2O3 stabilized ZrO2 supported catalysts generated the better conversions of CH4 and CO2 than nonstabilized ZrO2 supported catalysts. The mean CH4 conversions found were 54%, 59%, 60%, 66% and 65% respectively for the 5Ni-ZrO2, 5Ni-5Y-ZrO2, 5Ni-10Y-ZrO2, 5Ni-15Y-ZrO2 and 5Ni-20Y-ZrO2. The BET output displayed significant rise in the surface area of the Y2O3 satbilized catalysts. The crystallite size of NiO acquired via XRD measurements exhibited remarkable decrease due to the addition of Y2O3. TGA and TEM of the spent catalysts showed respectively, reduction of carbon formation as a result of Y2O3 addition and formation of multisized nano tubes. The experimentation of the best 5Ni-15Y-ZrO2 for 40 h produced 60% weight loss of mass and the formation of amorphous carbon on the surface via TGA and TPO respectively.

ACS Style

Anis Hamza Fakeeha; Ahmed Sadeq Al-Fatesh; Ahmed Aidid Ibrahim; Ahmed Elhag Abasaeed. CO2 reforming of CH4 over Ni-catalyst supported on yttria stabilized zirconia. Journal of Saudi Chemical Society 2021, 25, 101244 .

AMA Style

Anis Hamza Fakeeha, Ahmed Sadeq Al-Fatesh, Ahmed Aidid Ibrahim, Ahmed Elhag Abasaeed. CO2 reforming of CH4 over Ni-catalyst supported on yttria stabilized zirconia. Journal of Saudi Chemical Society. 2021; 25 (6):101244.

Chicago/Turabian Style

Anis Hamza Fakeeha; Ahmed Sadeq Al-Fatesh; Ahmed Aidid Ibrahim; Ahmed Elhag Abasaeed. 2021. "CO2 reforming of CH4 over Ni-catalyst supported on yttria stabilized zirconia." Journal of Saudi Chemical Society 25, no. 6: 101244.

Journal article
Published: 23 April 2021 in Energies
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Development of a transition metal based catalyst aiming at concomitant high activity and stability attributed to distinguished catalytic characteristics is considered as the bottleneck for dry reforming of methane (DRM). This work highlights the role of modifying zirconia (ZrO2) and alumina (Al2O3) supported nickel based catalysts using lanthanum oxide (La2O3) varying from 0 to 20 wt% during dry reforming of methane. The mesoporous catalysts with improved BET surface areas, improved dispersion, relatively lower reduction temperatures and enhanced surface basicity are identified after La2O3 doping. These factors have influenced the catalytic activity and higher hydrogen yields are found for La2O3 modified catalysts as compared to base catalysts (5 wt% Ni-ZrO2 and 5 wt% Ni-Al2O3). Post-reaction characterizations such as TGA have showed less coke formation over La2O3 modified samples. Raman spectra indicates decreased graphitization for La2O3 catalysts. The 5Ni-10La2O3-ZrO2 catalyst produced 80% hydrogen yields, 25% more than that of 5Ni-ZrO2. 5Ni-15La2O3-Al2O3 gave 84% hydrogen yields, 8% higher than that of 5Ni-Al2O3. Higher CO2 activity improved the surface carbon oxidation rate. From the study, the extent of La2O3 loading is dependent on the type of oxide support.

ACS Style

Ahmed Abasaeed; Samsudeen Kasim; Wasim Khan; Mahmud Sofiu; Ahmed Ibrahim; Anis Fakeeha; Ahmed Al-Fatesh. Hydrogen Yield from CO2 Reforming of Methane: Impact of La2O3 Doping on Supported Ni Catalysts. Energies 2021, 14, 2412 .

AMA Style

Ahmed Abasaeed, Samsudeen Kasim, Wasim Khan, Mahmud Sofiu, Ahmed Ibrahim, Anis Fakeeha, Ahmed Al-Fatesh. Hydrogen Yield from CO2 Reforming of Methane: Impact of La2O3 Doping on Supported Ni Catalysts. Energies. 2021; 14 (9):2412.

Chicago/Turabian Style

Ahmed Abasaeed; Samsudeen Kasim; Wasim Khan; Mahmud Sofiu; Ahmed Ibrahim; Anis Fakeeha; Ahmed Al-Fatesh. 2021. "Hydrogen Yield from CO2 Reforming of Methane: Impact of La2O3 Doping on Supported Ni Catalysts." Energies 14, no. 9: 2412.

Journal article
Published: 03 March 2021 in Molecular Catalysis
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Hydrogen production from dry reforming of methane (DRM) over chief Ni-based catalyst is cutting edge research area due to environmental consciousness about reducing global warming gases (CH4 and CO2) and greener route of synthesis. Herein, ceria promoted lanthanum-zirconia supported Ni catalyst system (5NixCe/LaZr; x = 0, 1, 1.5, 2, 2.5, 3, 5 wt.%) is prepared by the wet impregnation method. It is further characterized using X-ray diffraction, infrared spectroscopy, ultraviolet spectroscopy, temperature-programmed and cyclic temperature-programmed experiments. 2.5 wt.% ceria promoted lanthana-zirconia supported Ni catalyst (5Ni2.5Ce/LaZr) has thermally stabilized the support, wide Ni-LaZr interface for CH4 decomposition, wide basic surfaces (La2O3-ZrO2) for CO2 interaction, CO2 coordinated La+3 sites (as La2O2CO3 species), low band gap and oxygen vacancy carrying mobile oxygen (which is replenished by CO2). Altogether, it produces more than 87 % hydrogen yield. This thorough study and fine correlation will help design industrially suitable catalyst for hydrogen production through DRM.

ACS Style

Jyoti Khatri; Ahmed S. Al-Fatesh; Anis H. Fakeeha; Ahmed A. Ibrahim; Ahmed E. Abasaeed; Samsudeen O. Kasim; Ahmed I. Osman; Rutu Patel; Rawesh Kumar. Ce promoted lanthana-zirconia supported Ni catalyst system: A ternary redox system for hydrogen production. Molecular Catalysis 2021, 504, 111498 .

AMA Style

Jyoti Khatri, Ahmed S. Al-Fatesh, Anis H. Fakeeha, Ahmed A. Ibrahim, Ahmed E. Abasaeed, Samsudeen O. Kasim, Ahmed I. Osman, Rutu Patel, Rawesh Kumar. Ce promoted lanthana-zirconia supported Ni catalyst system: A ternary redox system for hydrogen production. Molecular Catalysis. 2021; 504 ():111498.

Chicago/Turabian Style

Jyoti Khatri; Ahmed S. Al-Fatesh; Anis H. Fakeeha; Ahmed A. Ibrahim; Ahmed E. Abasaeed; Samsudeen O. Kasim; Ahmed I. Osman; Rutu Patel; Rawesh Kumar. 2021. "Ce promoted lanthana-zirconia supported Ni catalyst system: A ternary redox system for hydrogen production." Molecular Catalysis 504, no. : 111498.

Journal article
Published: 17 February 2021 in International Journal of Hydrogen Energy
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The increasing alarm of global warming always draws interest in reactions like dry reforming of methane (DRM) where both global warming gases (CO2 and CH4) are converted into value-added chemical building blocks, such as syngas. Nickel catalyst active sites along with support acid-base profiles play a key role in DRM. Herein, xLa2O3+(100-x) Al2O3 (x = 0, 10, 15, 20%) supports are prepared and followed by NiO dispersion over the produced support by impregnation method. It was tested for DRM reaction and characterized with TGA, XRD, TEM, IR, Surface area and porosity measurement, H2-TPR, CO2-TPD and NH3-TPD techniques. Upon increasing the basic lanthana proportion in the acidic alumina support, the crystallinity of alumina and acidity of total support decline. Up to 15% Lanthana addition in support claims a low acid and rich basic surface including super basic sites (related to unidentate carbonates) which governed optimum catalytic performance 64% CH4 conversion, 79% CO2 conversion and H2/CO ~ 1 up to 460-min in time on stream test. 20% lanthanum oxide loading led to inferior performance due to rapid loss of surface area, pore-volume, pore diameter, acidity and medium basic strength sites. Fine-tuning of acid-base lanthana-alumina support with dispersed Ni species are a means for understanding DRM.

ACS Style

Fahad S. Al-Mubaddel; Rawesh Kumar; Mahmud Lanre Sofiu; Francesco Frusteri; Ahmed Aidid Ibrahim; Vijay Kumar Srivastava; Samsudeen Olajide Kasim; Anis Hamza Fakeeha; Ahmed Elhag Abasaeed; Ahmed I. Osman; Ahmed Sadeq Al-Fatesh. Optimizing acido-basic profile of support in Ni supported La2O3+Al2O3 catalyst for dry reforming of methane. International Journal of Hydrogen Energy 2021, 46, 14225 -14235.

AMA Style

Fahad S. Al-Mubaddel, Rawesh Kumar, Mahmud Lanre Sofiu, Francesco Frusteri, Ahmed Aidid Ibrahim, Vijay Kumar Srivastava, Samsudeen Olajide Kasim, Anis Hamza Fakeeha, Ahmed Elhag Abasaeed, Ahmed I. Osman, Ahmed Sadeq Al-Fatesh. Optimizing acido-basic profile of support in Ni supported La2O3+Al2O3 catalyst for dry reforming of methane. International Journal of Hydrogen Energy. 2021; 46 (27):14225-14235.

Chicago/Turabian Style

Fahad S. Al-Mubaddel; Rawesh Kumar; Mahmud Lanre Sofiu; Francesco Frusteri; Ahmed Aidid Ibrahim; Vijay Kumar Srivastava; Samsudeen Olajide Kasim; Anis Hamza Fakeeha; Ahmed Elhag Abasaeed; Ahmed I. Osman; Ahmed Sadeq Al-Fatesh. 2021. "Optimizing acido-basic profile of support in Ni supported La2O3+Al2O3 catalyst for dry reforming of methane." International Journal of Hydrogen Energy 46, no. 27: 14225-14235.

Research article
Published: 07 January 2021 in ACS Omega
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Yttria modified zirconia (YZ) supported on 5 wt % of Ni-based catalysts promoted with ceria (1–3 wt %) were prepared by the impregnation process to investigate their performance for dry reforming of methane. The reforming reactions, conducted at 700 °C and at atmospheric pressure using a CO2/CH4/N2 fixed feed ratio of 3/3/1, with a total flow rate of 70 mL/min, revealed that the ceria-promoted catalysts (xCe–Ni–YZ; x = 1–3 wt %) enhanced the CH4 and CO2 conversions as compared to the reference catalyst (Ni–YZ). A CO2 conversion of 85% was exhibited by the 3Ce–Ni–YZ catalyst. Despite increased conversions, xCe–Ni–YZ catalysts showed more amounts of carbon deposition as evidenced by the values of TGA, and hence were found to be less stable as compared to the reference Ni–YZ catalyst. The used and fresh catalysts were characterized by BET, H2-TPR, XRD, TEM, Raman, TPD, and TGA. TEM images displayed nanoparticle sizes of Ni in the fresh catalysts, while carbon filaments were formed on the spent catalysts. The CO2-TPD, H2-TPR, and BET results revealed the existence of only weak and moderate basic sites, the increase of total hydrogen consumption, and the surface area values with the addition of the Ce promoter, respectively. The TGA analysis showed that the Ce promoter increased the carbon deposition, while the Raman results indicated the dominance of crystallinity due to the graphitized carbon.

ACS Style

Anis H. Fakeeha; Ahmed S. Al Fatesh; Ahmed A. Ibrahim; Abdulrahman N. Kurdi; Ahmed E. Abasaeed. Yttria Modified ZrO2 Supported Ni Catalysts for CO2 Reforming of Methane: The Role of Ce Promoter. ACS Omega 2021, 6, 1280 -1288.

AMA Style

Anis H. Fakeeha, Ahmed S. Al Fatesh, Ahmed A. Ibrahim, Abdulrahman N. Kurdi, Ahmed E. Abasaeed. Yttria Modified ZrO2 Supported Ni Catalysts for CO2 Reforming of Methane: The Role of Ce Promoter. ACS Omega. 2021; 6 (2):1280-1288.

Chicago/Turabian Style

Anis H. Fakeeha; Ahmed S. Al Fatesh; Ahmed A. Ibrahim; Abdulrahman N. Kurdi; Ahmed E. Abasaeed. 2021. "Yttria Modified ZrO2 Supported Ni Catalysts for CO2 Reforming of Methane: The Role of Ce Promoter." ACS Omega 6, no. 2: 1280-1288.

Journal article
Published: 20 November 2020 in Processes
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Nickel catalysts supported on zirconium oxide and modified by various amounts of lanthanum with 10, 15, and 20 wt.% were synthesized for CO2 reforming of methane. The effect of La2O3 as a promoter on the stability of the catalyst, the amount of carbon formed, and the ratio of H2 to CO were investigated. In this study, we observed that promoting the catalyst with La2O3 enhanced catalyst activities. The conversions of the feed, i.e., methane and carbon dioxide, were in the order 10La2O3 > 15La2O3 > 20La2O3 > 0La2O3, with the highest conversions being about 60% and 70% for both CH4 and CO2 respectively. Brunauer–Emmett–Teller (BET) analysis showed that the surface area of the catalysts decreased slightly with increasing La2O3 doping. We observed that 10% La2O3 doping had the highest specific surface area (21.6 m2/g) and the least for the un-promoted sample. The higher surface areas of the promoted samples relative to the reference catalyst is an indication of the concentration of the metals at the mouths of the pores of the support. XRD analysis identified the different phases available, which ranged from NiO species to the monoclinic and tetragonal phases of ZrO2. Temperature programmed reduction (TPR) analysis showed that the addition of La2O3 lowered the activation temperature needed for the promoted catalysts. The structural changes in the morphology of the fresh catalyst were revealed by microscopic analysis. The elemental compositions of the catalyst, synthesized through energy dispersive X-ray analysis, were virtually the same as the calculated amount used for the synthesis. The thermogravimetric analysis (TGA) of spent catalysts showed that the La2O3 loading of 10 wt.% contributed to the gasification of carbon deposits and hence gave about 1% weight-loss after a reaction time of 7.5 h at 700 °C.

ACS Style

Mahmud S. Lanre; Ahmed S. Al-Fatesh; Anis H. Fakeeha; Samsudeen O. Kasim; Ahmed A. Ibrahim; Abdulrahman S. Al-Awadi; Attiyah A. Al-Zahrani; Ahmed E. Abasaeed. Catalytic Performance of Lanthanum Promoted Ni/ZrO2 for Carbon Dioxide Reforming of Methane. Processes 2020, 8, 1502 .

AMA Style

Mahmud S. Lanre, Ahmed S. Al-Fatesh, Anis H. Fakeeha, Samsudeen O. Kasim, Ahmed A. Ibrahim, Abdulrahman S. Al-Awadi, Attiyah A. Al-Zahrani, Ahmed E. Abasaeed. Catalytic Performance of Lanthanum Promoted Ni/ZrO2 for Carbon Dioxide Reforming of Methane. Processes. 2020; 8 (11):1502.

Chicago/Turabian Style

Mahmud S. Lanre; Ahmed S. Al-Fatesh; Anis H. Fakeeha; Samsudeen O. Kasim; Ahmed A. Ibrahim; Abdulrahman S. Al-Awadi; Attiyah A. Al-Zahrani; Ahmed E. Abasaeed. 2020. "Catalytic Performance of Lanthanum Promoted Ni/ZrO2 for Carbon Dioxide Reforming of Methane." Processes 8, no. 11: 1502.

Journal article
Published: 28 April 2020 in Processes
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Dry reforming of CH4 was conducted over promoted Ni catalysts, supported on mesoporous gamma-alumina. The Ni catalysts were promoted by various metal oxides (CuO, ZnO, Ga2O3, or Gd2O3) and were synthesized by the incipient wetness impregnation method. The influence of the promoters on the catalyst stability, coke deposition, and H2/CO mole ratio was investigated. Stability tests were carried out for 460 min. The H2 yield was 87% over 5Ni+1Gd/Al, while the CH4 and CO2 conversions were found to decrease in the following order: 5Ni+1Gd/Al > 5Ni+1Ga/Al > 5Ni+1Zn/Al > 5Ni/Al > 5Ni+1Cu/Al. The high catalytic performance of 5Ni+1Gd/Al, 5Ni+1Ga/Al, and 5Ni+1Zn/Al was found to be closely related to their contents of NiO species, which interacted moderately and strongly with the support, whereas free NiO in 5Ni+1Cu/Al made it catalytically inactive, even than 5Ni/Al. The 5Ni+1Gd/Al catalyst showed the highest CH4 conversion of 83% with H2/CO mole ratio of ~1.0.

ACS Style

Anis H. Fakeeha; Abdulaziz A. Bagabas; Mahmud S. Lanre; Ahmed Osman; Samsudeen O. Kasim; Ahmed A. Ibrahim; Rasheed Arasheed; Abdulmajeed Alkhalifa; Ahmed Y. Elnour; Ahmed E. Abasaeed; Ahmed S. Al-Fatesh. Catalytic Performance of Metal Oxides Promoted Nickel Catalysts Supported on Mesoporous γ-Alumina in Dry Reforming of Methane. Processes 2020, 8, 522 .

AMA Style

Anis H. Fakeeha, Abdulaziz A. Bagabas, Mahmud S. Lanre, Ahmed Osman, Samsudeen O. Kasim, Ahmed A. Ibrahim, Rasheed Arasheed, Abdulmajeed Alkhalifa, Ahmed Y. Elnour, Ahmed E. Abasaeed, Ahmed S. Al-Fatesh. Catalytic Performance of Metal Oxides Promoted Nickel Catalysts Supported on Mesoporous γ-Alumina in Dry Reforming of Methane. Processes. 2020; 8 (5):522.

Chicago/Turabian Style

Anis H. Fakeeha; Abdulaziz A. Bagabas; Mahmud S. Lanre; Ahmed Osman; Samsudeen O. Kasim; Ahmed A. Ibrahim; Rasheed Arasheed; Abdulmajeed Alkhalifa; Ahmed Y. Elnour; Ahmed E. Abasaeed; Ahmed S. Al-Fatesh. 2020. "Catalytic Performance of Metal Oxides Promoted Nickel Catalysts Supported on Mesoporous γ-Alumina in Dry Reforming of Methane." Processes 8, no. 5: 522.

Journal article
Published: 25 April 2020 in Processes
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The catalytic activity of the partial oxidation reforming reaction for hydrogen production over 10% Ni supported on high and low surface area alumina and zirconia was investigated. The reforming reactions, under atmospheric pressure, were performed with a feed molar ratio of CH4/O2 = 2.0. The reaction temperature was set to 450–650 °C. The catalytic activity, stability, and carbon formation were determined via TGA, TPO, Raman, and H2 yield. The catalysts were calcined at 600 and 800 °C. The catalysts were prepared via the wet-impregnation method. Various characterizations were conducted using BET, XRD, TPR, TGA, TPD, TPO, and Raman. The highest methane conversion (90%) and hydrogen yield (72%) were obtained at a 650 °C reaction temperature using Ni-Al-H-600, which also showed the highest stability for the ranges of the reaction temperatures investigated. Indeed, the time-on-stream for 7 h of the Ni-Al-H-600 catalyst displayed high activity and a stable profile when the reaction temperature was set to 650 °C.

ACS Style

Anis Fakeeha; Ahmed A. Ibrahim; Hesham Aljuraywi; Yazeed Alqahtani; Ahmad Alkhodair; Suliman Alswaidan; Ahmed E. Abasaeed; Samsudeen O. Kasim; Sofiu Mahmud; Ahmed S. Al-Fatesh. Hydrogen Production by Partial Oxidation Reforming of Methane over Ni Catalysts Supported on High and Low Surface Area Alumina and Zirconia. Processes 2020, 8, 499 .

AMA Style

Anis Fakeeha, Ahmed A. Ibrahim, Hesham Aljuraywi, Yazeed Alqahtani, Ahmad Alkhodair, Suliman Alswaidan, Ahmed E. Abasaeed, Samsudeen O. Kasim, Sofiu Mahmud, Ahmed S. Al-Fatesh. Hydrogen Production by Partial Oxidation Reforming of Methane over Ni Catalysts Supported on High and Low Surface Area Alumina and Zirconia. Processes. 2020; 8 (5):499.

Chicago/Turabian Style

Anis Fakeeha; Ahmed A. Ibrahim; Hesham Aljuraywi; Yazeed Alqahtani; Ahmad Alkhodair; Suliman Alswaidan; Ahmed E. Abasaeed; Samsudeen O. Kasim; Sofiu Mahmud; Ahmed S. Al-Fatesh. 2020. "Hydrogen Production by Partial Oxidation Reforming of Methane over Ni Catalysts Supported on High and Low Surface Area Alumina and Zirconia." Processes 8, no. 5: 499.

Journal article
Published: 20 April 2020 in Crystals
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Ti modification of mesoporous silica support has been reported as an effective way to enhance Cr–Ti–Si interactions that, in turn, impact the catalytic dehydrogenation of ethane with CO2. However, such modification necessitates a repeated, time-consuming and tedious process. In this work, a simple, fast and facile approach has been utilized to synthesize chromium-oxide-loaded titania–silica mesoporous nanocomposites. A series of Cr(y)/Ti(x)–Si mesoporous nanocomposite catalysts with varying Ti and Cr contents were prepared and tested in the dehydrogenation of ethane with carbon dioxide. The as-synthesized catalysts were characterized by XRD, TEM, SEM, BET, UV–Vis–DR, XPS and H2–TPR techniques. The effect of titanium content, as well as chromium loading on the performance of the prepared Cr(y)/Ti(x)–Si catalysts, was investigated. It was found that 2.2 and 8 wt % are the optimum titanium and chromium contents in the synthesized catalysts for obtaining the highest catalytic activity. The superior catalytic performance of the Cr(8)/Ti(2.2)–Si catalyst can be attributed to a higher dispersion of the Cr species, as well as a higher content of the redox Cr species on the surface of the Cr/Ti–Si catalyst. The results showed that the Cr(8)/Ti(2.2)–Si catalyst efficiently dehydrogenated C2H6 in the presence of CO2 giving a 52.3% ethane conversion and 48.0% ethylene yield at 700 °C reaction temperature.

ACS Style

Abdulrhman S. Al-Awadi; Ahmed Mohamed El-Toni; Saeed M. Al-Zahrani; Ahmed E. Abasaeed; Aslam Khan. Synthesis, Characterization and Catalytic Evaluation of Chromium Oxide Deposited on Titania–Silica Mesoporous Nanocomposite for the Ethane Dehydrogenation with CO2. Crystals 2020, 10, 322 .

AMA Style

Abdulrhman S. Al-Awadi, Ahmed Mohamed El-Toni, Saeed M. Al-Zahrani, Ahmed E. Abasaeed, Aslam Khan. Synthesis, Characterization and Catalytic Evaluation of Chromium Oxide Deposited on Titania–Silica Mesoporous Nanocomposite for the Ethane Dehydrogenation with CO2. Crystals. 2020; 10 (4):322.

Chicago/Turabian Style

Abdulrhman S. Al-Awadi; Ahmed Mohamed El-Toni; Saeed M. Al-Zahrani; Ahmed E. Abasaeed; Aslam Khan. 2020. "Synthesis, Characterization and Catalytic Evaluation of Chromium Oxide Deposited on Titania–Silica Mesoporous Nanocomposite for the Ethane Dehydrogenation with CO2." Crystals 10, no. 4: 322.

Journal article
Published: 01 April 2020 in Catalysts
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In this paper, a comprehensive study was carried out on the application of perovskite catalyst in dry reforming of CH4. The perovskite catalyst was prepared using a sol–gel method. The prepared samples were characterized by N2 adsorption/desorption, TPR, XRD, CO2-TPD, TGA, TPO, Raman, and SEM techniques. In addition, the effect of operating pressure, namely, 1 bar, 3 bar, 5 bar, and 7 bar, temperature (500–800 °C) was evaluated. The characterization results indicated that catalysts operated at 1 bar, gas hourly space velocity of 84000 (mL/g/h) gave the best catalytic performance. CH4 and CO2 conversions of 77 and 80% were obtained at 1 bar and at 700 °C reaction temperature. The increase of reaction temperatures from 500 °C to 800 °C increased the reaction rate and hence the methane and carbon dioxide conversions were increased. A unity ratio of H2/CO was obtained at 1 bar for temperatures 600 °C and above. Similarly, the time on stream tests, obtained at a 700 °C reaction temperature, showed that the best ratio in terms of the closeness of unity and the stable profile could be attained when the pressure was set to 1 bar. The TGA analysis showed the drop of mass due to oxidation of carbon deposits, which started at 500 °C. The catalyst operated at 1 bar produced the least amount of carbon, equivalent to 35% weight loss, while the 3 and 5 bar operated catalysts generated carbon formation, equivalent to 65% weight loss. However, the 7 bar operated catalyst resulted the highest accumulation of carbon formation, equivalent to 83% weight reduction. Hence, the TGA profile indicated the relative carbon deposition on the catalyst, which was dependent of the operated pressure and hence confirmed the suitability operation pressure of 1 bar. The characterizations of the Raman, EDX, TGA, and TPO all presented the formation of carbon.

ACS Style

Anis Hamza Fakeeha; Ahmed Sadeq Al-Fatesh; Jehad K. Abu-Dahrieh; Ahmed Aidid Ibrahim; Samsudeen Olajide Kasim; Ahmed Elhag Abasaeed. Effect of Pressure on Na0.5La0.5Ni0.3Al0.7O2.5 Perovskite Catalyst for Dry Reforming of CH4. Catalysts 2020, 10, 379 .

AMA Style

Anis Hamza Fakeeha, Ahmed Sadeq Al-Fatesh, Jehad K. Abu-Dahrieh, Ahmed Aidid Ibrahim, Samsudeen Olajide Kasim, Ahmed Elhag Abasaeed. Effect of Pressure on Na0.5La0.5Ni0.3Al0.7O2.5 Perovskite Catalyst for Dry Reforming of CH4. Catalysts. 2020; 10 (4):379.

Chicago/Turabian Style

Anis Hamza Fakeeha; Ahmed Sadeq Al-Fatesh; Jehad K. Abu-Dahrieh; Ahmed Aidid Ibrahim; Samsudeen Olajide Kasim; Ahmed Elhag Abasaeed. 2020. "Effect of Pressure on Na0.5La0.5Ni0.3Al0.7O2.5 Perovskite Catalyst for Dry Reforming of CH4." Catalysts 10, no. 4: 379.

Journal article
Published: 18 February 2020 in Catalysts
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Dry reforming of methane (DRM) was studied in the light of Ni supported on 8%PO4 + ZrO2 catalysts. Cerium was used to modify the Ni active metal. Different percentage loadings of Ce (1%, 1.5%, 2%, 2.5%, 3%, and 5%) were tested. The wet incipient impregnation method was used for the preparation of all catalysts. The catalysts were activated at 700 °C for ½ h. The reactions were performed at 800 °C using a gas hourly space velocity of 28,000 mL (h·gcat)−1. X-ray diffraction (XRD), N2 physisorption, hydrogen temperature programmed reduction (H2-TPR), temperature programmed oxidation (TPO), temperature programmed desorption (TPD), and thermogravimetric analysis (TGA) were used for characterizing the catalysts. The TGA analysis depicted minor amounts of carbon deposition. The CO2-TPD results showed that Ce enhanced the basicity of the catalysts. The 3% Ce loading possessed the highest surface area, the largest pore volume, and the greatest pore diameter. All the promoted catalysts enhanced the conversions of CH4 and CO2. Among the promoted catalysts tested, the 10Ni + 3%Ce/8%PO4 + ZrO2 catalyst system operated at 1 bar and at 800 °C gave the highest conversions of CH4 (95%) and CO2 (96%). The stability profile of Cerium-modified catalysts (10%Ni/8%PO4 + ZrO2) depicted steady CH4 and CO2 conversions during the 7.5 h time on stream.

ACS Style

Ahmed A. Ibrahim; Ahmed S. Al-Fatesh; Nadavala Siva Kumar; Ahmed E. Abasaeed; Samsudeen O. Kasim; Anis H. Fakeeha. Dry Reforming of Methane Using Ce-modified Ni Supported on 8%PO4 + ZrO2 Catalysts. Catalysts 2020, 10, 242 .

AMA Style

Ahmed A. Ibrahim, Ahmed S. Al-Fatesh, Nadavala Siva Kumar, Ahmed E. Abasaeed, Samsudeen O. Kasim, Anis H. Fakeeha. Dry Reforming of Methane Using Ce-modified Ni Supported on 8%PO4 + ZrO2 Catalysts. Catalysts. 2020; 10 (2):242.

Chicago/Turabian Style

Ahmed A. Ibrahim; Ahmed S. Al-Fatesh; Nadavala Siva Kumar; Ahmed E. Abasaeed; Samsudeen O. Kasim; Anis H. Fakeeha. 2020. "Dry Reforming of Methane Using Ce-modified Ni Supported on 8%PO4 + ZrO2 Catalysts." Catalysts 10, no. 2: 242.

Journal article
Published: 09 January 2020 in Catalysts
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A series of large-pore mesoporous silica (LPMS)-supported CrOx catalysts were synthesized by hydrothermal and impregnation methods and tested for ethane dehydrogenation in the presence of CO2 as an oxidant. To assess the effect of hydrothermal temperature treatment on the characteristics of LPMS support, different hydrothermal temperatures (100–160 °C) were studied and optimized. The optimum support was then loaded with different amounts of chromium (0, 2, 4, 8, and 11 wt % Cr). The obtained catalysts were characterized by different techniques such as XRD, BET, TEM, SEM, XPS, FTIR, and diffuse reflectance UV-Vis spectroscopy. The characterization results indicated that the sample hydrothermally treated at 130 °C exhibited the highest pore volume, a narrow pore size distribution, and a moderate BET surface area. Chromium species with various oxidation states including Cr3+, Cr6+, and α-Cr2O3 were detected in all synthesized Cr(y)/LPMS-130 catalysts. A lower Cr content resulted in the formation of Cr6+, whereas a higher Cr content dominated the α-Cr2O3 on the surface of the catalyst. Among the synthesized catalysts, the Cr(4)/LPMS-130 catalyst showed the highest Cr6+/Cr3+ ratio, indicating a good dispersion of chromium species along with a fine particle size. The ethane conversion and ethylene selectivity were 50.5 and 91.1% for Cr(4)/LPMS-130, respectively. Carbon dioxide was believed to supply enough lattice oxygen to maintain the Cr species at a higher oxidation state and to consume the hydrogen resulting from ethane cracking by a reverse water gas shift reaction.

ACS Style

Abdulrhman S. Al-Awadi; Saeed M. Al-Zahrani; Ahmed Mohamed El-Toni; Ahmed E. Abasaeed. Dehydrogenation of Ethane to Ethylene by CO2 over Highly Dispersed Cr on Large-Pore Mesoporous Silica Catalysts. Catalysts 2020, 10, 97 .

AMA Style

Abdulrhman S. Al-Awadi, Saeed M. Al-Zahrani, Ahmed Mohamed El-Toni, Ahmed E. Abasaeed. Dehydrogenation of Ethane to Ethylene by CO2 over Highly Dispersed Cr on Large-Pore Mesoporous Silica Catalysts. Catalysts. 2020; 10 (1):97.

Chicago/Turabian Style

Abdulrhman S. Al-Awadi; Saeed M. Al-Zahrani; Ahmed Mohamed El-Toni; Ahmed E. Abasaeed. 2020. "Dehydrogenation of Ethane to Ethylene by CO2 over Highly Dispersed Cr on Large-Pore Mesoporous Silica Catalysts." Catalysts 10, no. 1: 97.

Journal article
Published: 20 December 2019 in Crystals
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Oxidative dehydrogenation of alkanes to alkenes by a mild oxidant such as carbon dioxide is an active area of research. A series of MCM41-supported bimetallic oxide catalysts containing chromium oxide in addition to metal oxides (Ce, Co, Zn, V, Nb, and Mo) has been prepared. The binary catalysts have Cr metal oxide incorporated into MCM41 structure while the other oxides are either incorporated with Cr or impregnated on the MCM41 surface. The synthesized catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 sorption, scanning electron microscopy (SEM), hydrogen temperature programmed reduction (H2-TPR), and Diffuse reflectance UV–vis spectroscopy (DRS). The catalytic activity of Cr(4)-M(4)/MCM-41 catalysts in the dehydrogenation of ethane with CO2 was investigated. The textural properties of the synthesized samples showed that the addition of the bimetallic oxides did not disturb the mesoporous structure of MCM41 and the prepared catalysts exhibited a high BET surface area; however, the lowest surface area was recorded for Cr(4)-Mo(4)/MCM41 catalyst at 701 m2/g. Among the prepared catalysts, H2-TPR profile of Cr(4)-Ce(4)/MCM41 revealed the increase in the concentration of Cr6+ species which interacted with the framework of siliceous support. On the other hand, H2-TPR profiles of Cr(4)-Co(4)/MCM41 showed wide reduction peaks centered at 400 °C which is ascribed to reduction of Cr6+ to Cr3+ species and Co3O4 to metallic Co. At the same time, Cr(4)-Mo(4)/MCM41 and Cr(4)-V(4)/MCM41 exhibited higher temperature reduction peaks, indicating these two catalysts require higher activation temperatures. The synergy between the Cr with Zn or Nb metals reduced the concentration of Cr6+ species which is reflected in their catalytic performance. Cr(4)-Ce(4)/MCM41 recorded the highest catalytic activity toward ethylene production where the ethane conversion and ethylene yield were 37.9% and 35.1%, respectively.

ACS Style

Abdulrhman S. Al-Awadi; Ahmed Mohamed El-Toni; Mansour Alhoshan; Aslam Khan; Muhammad Ali Shar; Ahmed E. Abasaeed; Saeed M. Al-Zahrani. Synergetic Impact of Secondary Metal Oxides of Cr-M/MCM41 Catalyst Nanoparticles for Ethane Oxidative Dehydrogenation Using Carbon Dioxide. Crystals 2019, 10, 7 .

AMA Style

Abdulrhman S. Al-Awadi, Ahmed Mohamed El-Toni, Mansour Alhoshan, Aslam Khan, Muhammad Ali Shar, Ahmed E. Abasaeed, Saeed M. Al-Zahrani. Synergetic Impact of Secondary Metal Oxides of Cr-M/MCM41 Catalyst Nanoparticles for Ethane Oxidative Dehydrogenation Using Carbon Dioxide. Crystals. 2019; 10 (1):7.

Chicago/Turabian Style

Abdulrhman S. Al-Awadi; Ahmed Mohamed El-Toni; Mansour Alhoshan; Aslam Khan; Muhammad Ali Shar; Ahmed E. Abasaeed; Saeed M. Al-Zahrani. 2019. "Synergetic Impact of Secondary Metal Oxides of Cr-M/MCM41 Catalyst Nanoparticles for Ethane Oxidative Dehydrogenation Using Carbon Dioxide." Crystals 10, no. 1: 7.

Journal article
Published: 31 May 2019 in Materials
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A promising method to reduce global warming has been methane reforming with CO2, as it combines two greenhouse gases to obtain useful products. In this study, Ni-supported catalysts were synthesized using the wet impregnation method to obtain 5%Ni/Al2O3(SA-5239), 5%Ni/Al2O3(SA-6175), 5%Ni/SiO2, 5%Ni/MCM41, and 5%Ni/SBA15. The catalysts were tested in dry reforming of methane at 700 °C, 1 atm, and a space velocity of 39,000 mL/gcat h, to study the interaction of Ni with the supports, and evaluation was based on CH4 and CO2 conversions. 5%Ni/Al2O3(SA-6175) and 5%Ni/SiO2 gave the highest conversion of CH4 (78 and 75%, respectively) and CO2 (84 and 82%, respectively). The catalysts were characterized by some techniques. Ni phases were identified by X-ray diffraction patterns. Brunauer–Emmett–Teller analysis showed different surface areas of the catalysts with the least being 4 m2/g and the highest 668 m2/g belonging to 5%Ni/Al2O3(SA-5239) and 5%Ni/SBA15, respectively. The reduction profiles revealed weak NiO-supports interaction for 5%Ni/Al2O3(SA-5239), 5%Ni/MCM41, and 5%Ni/SBA15; while strong interaction was observed in 5%Ni/Al2O3(SA-6175) and 5%Ni/SiO2. The 5%Ni/Al2O3(SA-6175) and 5%Ni/SiO2 were close with respect to performance; however, the former had a higher amount of carbon deposit, which is mostly graphitic, according to the conducted thermal analysis. Carbon deposits on 5%Ni/SiO2 were mainly atomic in nature.

ACS Style

Anis Hamza Fakeeha; Samsudeen Olajide Kasim; Ahmed Aidid Ibrahim; Ahmed Elhag Abasaeed; Ahmed Sadeq Al-Fatesh. Influence of Nature Support on Methane and CO2 Conversion in a Dry Reforming Reaction over Nickel-Supported Catalysts. Materials 2019, 12, 1777 .

AMA Style

Anis Hamza Fakeeha, Samsudeen Olajide Kasim, Ahmed Aidid Ibrahim, Ahmed Elhag Abasaeed, Ahmed Sadeq Al-Fatesh. Influence of Nature Support on Methane and CO2 Conversion in a Dry Reforming Reaction over Nickel-Supported Catalysts. Materials. 2019; 12 (11):1777.

Chicago/Turabian Style

Anis Hamza Fakeeha; Samsudeen Olajide Kasim; Ahmed Aidid Ibrahim; Ahmed Elhag Abasaeed; Ahmed Sadeq Al-Fatesh. 2019. "Influence of Nature Support on Methane and CO2 Conversion in a Dry Reforming Reaction over Nickel-Supported Catalysts." Materials 12, no. 11: 1777.

Journal article
Published: 22 May 2019 in Catalysts
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Ni supported on bare and modified ZrO2 samples were synthesized using the incipient wet impregnation method. The t-ZrO2 phase was stabilized by incorporation of La2O3 into ZrO2. Moreover, the influence of CeO2-doping on the physico-chemical and catalytic properties under CO2 reforming conditions was probed. The characterization data of the investigated catalysts were obtained by using XRD, CO2/H2-TPD, BET, TPR, TPO, TGA, XPS and TEM characterization techniques. In the pristine Ni/Zr catalyst, the t-ZrO2 phase transformed into the monoclinic phase. However, upon support modification by La2O3, significant effects on the physicochemical properties were observed due to the monoclinic-to-tetragonal ZrO2 phase transformation also affecting the catalytic activity. As a result, superior activity on the La2O3 modified Ni/Zr catalyst was achieved, while no relevant change in the surface properties and activity of the catalysts was detected after doping by CeO2. The peculiar behavior of the Ni/La-ZrO2 sample was related to higher dispersion of the active phase, with a more pronounced stabilization of the t-ZrO2 phase.

ACS Style

Ahmed Sadeq Al-Fatesh; Yasir Arafat; Ahmed Aidid Ibrahim; Samsudeen Olajide Kasim; Abdulrahman Alharthi; Anis Hamza Fakeeha; Ahmed Elhag Abasaeed; Giuseppe Bonura; Francesco Frusteri. Catalytic Behaviour of Ce-Doped Ni Systems Supported on Stabilized Zirconia under Dry Reforming Conditions. Catalysts 2019, 9, 473 .

AMA Style

Ahmed Sadeq Al-Fatesh, Yasir Arafat, Ahmed Aidid Ibrahim, Samsudeen Olajide Kasim, Abdulrahman Alharthi, Anis Hamza Fakeeha, Ahmed Elhag Abasaeed, Giuseppe Bonura, Francesco Frusteri. Catalytic Behaviour of Ce-Doped Ni Systems Supported on Stabilized Zirconia under Dry Reforming Conditions. Catalysts. 2019; 9 (5):473.

Chicago/Turabian Style

Ahmed Sadeq Al-Fatesh; Yasir Arafat; Ahmed Aidid Ibrahim; Samsudeen Olajide Kasim; Abdulrahman Alharthi; Anis Hamza Fakeeha; Ahmed Elhag Abasaeed; Giuseppe Bonura; Francesco Frusteri. 2019. "Catalytic Behaviour of Ce-Doped Ni Systems Supported on Stabilized Zirconia under Dry Reforming Conditions." Catalysts 9, no. 5: 473.

Journal article
Published: 10 May 2019 in Applied Sciences
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Ni, Co, and Co–Ni bimetallic catalysts supported over SBA-15 and over SBA-15 doped with Zn or Ce oxides were prepared and tested in a methane dry reforming reaction. The loading of the metals in the catalyst was 5 wt % for either mono or bimetallic catalysts. The prepared catalysts were tested in a continuous-flow fixed-bed reactor at 800 °C under atmospheric pressure. XRD, TPR, TPD, and SEM characterization techniques were employed to investigate the catalytic properties of fresh catalysts. SEM and TGA were used to study the catalytic properties of spent catalysts. A remarkable effect on the reduction properties and catalytic performance of catalysts was observed after adding Zn and Ce. Over an 8 h test, Ni/SBA-15 showed the best activity and stability. The conversion was 90% for CH4 and CO2. Co–Ni/SBA-15 and Co–Ni/Ce–SBA-15 have shown a reasonable activity and stability. Selectivity of the Ni/SBA-15 catalyst was higher than all other catalysts as indicated by the H2/CO ratio. Co/SBA-15 and Co–Ni/Zn–SBA-15 showed a low activity and selectivity. TPD–NH3 profiles indicated that doping SBA-15 with Ce and/or Zn increased the catalyst acidic sites. Ni/SBA-15 is an excellent potential catalyst for commercial methane dry reforming processes.

ACS Style

Ahmed A. Ibrahim; Ashraf Amin; Ahmed S. Al-Fatesh; Nadavala Siva Kumar; Samsudeen Olajide Kasim; Abdulrhman S. Al-Awadi; Ahmed M. El-Toni; Ahmed Elhag Abasaeed; Anis H. Fakeeha. Nanosized Ni/SBA-15 Catalysts for CO2 Reforming of CH4. Applied Sciences 2019, 9, 1926 .

AMA Style

Ahmed A. Ibrahim, Ashraf Amin, Ahmed S. Al-Fatesh, Nadavala Siva Kumar, Samsudeen Olajide Kasim, Abdulrhman S. Al-Awadi, Ahmed M. El-Toni, Ahmed Elhag Abasaeed, Anis H. Fakeeha. Nanosized Ni/SBA-15 Catalysts for CO2 Reforming of CH4. Applied Sciences. 2019; 9 (9):1926.

Chicago/Turabian Style

Ahmed A. Ibrahim; Ashraf Amin; Ahmed S. Al-Fatesh; Nadavala Siva Kumar; Samsudeen Olajide Kasim; Abdulrhman S. Al-Awadi; Ahmed M. El-Toni; Ahmed Elhag Abasaeed; Anis H. Fakeeha. 2019. "Nanosized Ni/SBA-15 Catalysts for CO2 Reforming of CH4." Applied Sciences 9, no. 9: 1926.