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Dr. Ahmed Alfatesh
King Saud University, Riyadh 11451, Saudi Arabia

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0 CO2 capture and Utilization
0 Dry Reforming of Methane
0 Hydrogen and Syngas
0 Catalyst Characterization
0 Catalyst Development

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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: 02 June 2021 in International Journal of Hydrogen Energy
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ZrO2 supported Nickel catalyst, 9 wt%WO3 -91 wt%ZrO2 supported Nickel catalyst and ceria promoted 9 wt%WO3-91 wt%ZrO2 supported Nickel catalyst (5NixCe/WZr catalyst) is synthesized via wet impregnation and characterized by XRD, UV–vis, CO2 -TPD, H2 TPR-CO2 TPD-H2 TPR cycle, TPH, TPH followed by O2 -TPO and CO2 -TPD followed by O2 -TPO. Due to limitation in surface re-oxidizing capability and shading of catalytic active sites by thermally stable carbonates; catalytic activity of unpromoted catalyst system is less. 5NixCe/WZr catalyst has extended CH4 decomposition sites, additional basic sites (during the reaction) for CO2 adsorption and excellent redox accompany (Ce +4/Ce +3, W+6/W +4) for carbon oxidation and re-oxidizing capability of surface up to the pristine level. 2.5 wt% Ceria promotional addition is resulted into 78% H2 yield constantly up to 420 min TOS. The carbon deposit over ceria promoted system (up to 2.5 wt%) is amorphous type, more easily/moderately reducible, oxidizable and removable.

ACS Style

Rutu Patel; Ahmed S. Al-Fatesh; Anis H. Fakeeha; Yasir Arafat; Samsudeen O. Kasim; Ahmed A. Ibrahim; Salma A. Al-Zahrani; Ahmed E. Abasaeed; Vijay Kumar Srivastava; Rawesh Kumar. Impact of ceria over WO3–ZrO2 supported Ni catalyst towards hydrogen production through dry reforming of methane. International Journal of Hydrogen Energy 2021, 46, 25015 -25028.

AMA Style

Rutu Patel, Ahmed S. Al-Fatesh, Anis H. Fakeeha, Yasir Arafat, Samsudeen O. Kasim, Ahmed A. Ibrahim, Salma A. Al-Zahrani, Ahmed E. Abasaeed, Vijay Kumar Srivastava, Rawesh Kumar. Impact of ceria over WO3–ZrO2 supported Ni catalyst towards hydrogen production through dry reforming of methane. International Journal of Hydrogen Energy. 2021; 46 (49):25015-25028.

Chicago/Turabian Style

Rutu Patel; Ahmed S. Al-Fatesh; Anis H. Fakeeha; Yasir Arafat; Samsudeen O. Kasim; Ahmed A. Ibrahim; Salma A. Al-Zahrani; Ahmed E. Abasaeed; Vijay Kumar Srivastava; Rawesh Kumar. 2021. "Impact of ceria over WO3–ZrO2 supported Ni catalyst towards hydrogen production through dry reforming of methane." International Journal of Hydrogen Energy 46, no. 49: 25015-25028.

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.

Journal article
Published: 15 January 2021 in Processes
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H2 production through dry reforming of methane (DRM) is a hot topic amidst growing environmental and atom-economy concerns. Loading Ni-based reducible mixed oxide systems onto a thermally stable support is a reliable approach for obtaining catalysts of good dispersion and high stability. Herein, NiO was dispersed over MOx-modified-γ-Al2O3 (M = Ti, Mo, Si, or W; x = 2 or 3) through incipient wetness impregnation followed by calcination. The obtained catalyst systems were characterized by infrared, ultraviolet–visible, and X-ray photoelectron spectroscopies, and H2 temperature-programmed reduction. The mentioned synthetic procedure afforded the proper nucleation of different NiO-containing mixed oxides and/or interacting-NiO species. With different modifiers, the interaction of NiO with the γ-Al2O3 support was found to change, the Ni2+ environment was reformed exclusively, and the tendency of NiO species to undergo reduction was modified greatly. Catalyst systems 5Ni3MAl (M = Si, W) comprised a variety of species, whereby NiO interacted with the modifier and the support (e.g., NiSiO3, NiAl2O4, and NiWO3). These two catalyst systems displayed equal efficiency, >70% H2 yield at 800 °C, and were thermally stable for up to 420 min on stream. 5Ni3SiAl catalyst regained nearly all its activity during regeneration for up to two cycles.

ACS Style

Ahmed Sadeq Al-Fatesh; Mayankkumar Lakshmanbhai Chaudhary; Anis Hamza Fakeeha; Ahmed Aidid Ibrahim; Fahad Al-Mubaddel; Samsudeen Olajide Kasim; Yousef Abdulrahman Albaqmaa; Abdulaziz A. Bagabas; Rutu Patel; Rawesh Kumar. Role of Mixed Oxides in Hydrogen Production through the Dry Reforming of Methane over Nickel Catalysts Supported on Modified γ-Al2O3. Processes 2021, 9, 157 .

AMA Style

Ahmed Sadeq Al-Fatesh, Mayankkumar Lakshmanbhai Chaudhary, Anis Hamza Fakeeha, Ahmed Aidid Ibrahim, Fahad Al-Mubaddel, Samsudeen Olajide Kasim, Yousef Abdulrahman Albaqmaa, Abdulaziz A. Bagabas, Rutu Patel, Rawesh Kumar. Role of Mixed Oxides in Hydrogen Production through the Dry Reforming of Methane over Nickel Catalysts Supported on Modified γ-Al2O3. Processes. 2021; 9 (1):157.

Chicago/Turabian Style

Ahmed Sadeq Al-Fatesh; Mayankkumar Lakshmanbhai Chaudhary; Anis Hamza Fakeeha; Ahmed Aidid Ibrahim; Fahad Al-Mubaddel; Samsudeen Olajide Kasim; Yousef Abdulrahman Albaqmaa; Abdulaziz A. Bagabas; Rutu Patel; Rawesh Kumar. 2021. "Role of Mixed Oxides in Hydrogen Production through the Dry Reforming of Methane over Nickel Catalysts Supported on Modified γ-Al2O3." Processes 9, no. 1: 157.

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: 08 November 2020 in International Journal of Hydrogen Energy
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This research investigates the effect of doping Ni/La2O3+ZrO2 with nitrates of Ca, Cr, Ga, and Gd on the conversion of the feed and H2/CO molar ratio. The development of these catalysts is intended to tackle inefficiency of dry reforming of CH4 which stems from deactivation and sintering of active metal. All promoted catalysts perform better than the un-promoted catalyst. Cr promoted sample gives the best performance with CH4 and CO2 conversion averaging 83 and 88% respectively. Also, it maintains good stability. The relative ease of reducing the catalyst plus its porous nature are responsible for its performance. Ca promoted sample has the same area as that of the support indicating the movement of Ni–Ca out of the pores of the support during calcination. According to thermogravimetric analysis, the un-promoted catalyst records the highest amount of carbon while the Ca promoted sample has about 18%.

ACS Style

Ahmed Sadeq Al-Fatesh; Anis Hamza Fakeeha; Ahmed Aidid Ibrahim; Ahmed Elhag Abasaeed. Ni supported on La2O3+ZrO2 for dry reforming of methane: The impact of surface adsorbed oxygen species. International Journal of Hydrogen Energy 2020, 46, 3780 -3788.

AMA Style

Ahmed Sadeq Al-Fatesh, Anis Hamza Fakeeha, Ahmed Aidid Ibrahim, Ahmed Elhag Abasaeed. Ni supported on La2O3+ZrO2 for dry reforming of methane: The impact of surface adsorbed oxygen species. International Journal of Hydrogen Energy. 2020; 46 (5):3780-3788.

Chicago/Turabian Style

Ahmed Sadeq Al-Fatesh; Anis Hamza Fakeeha; Ahmed Aidid Ibrahim; Ahmed Elhag Abasaeed. 2020. "Ni supported on La2O3+ZrO2 for dry reforming of methane: The impact of surface adsorbed oxygen species." International Journal of Hydrogen Energy 46, no. 5: 3780-3788.

Journal article
Published: 01 November 2020 in International Journal of Hydrogen Energy
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This paper investigated the effect of doping Ni supported catalysts with different ceria loading. The catalysts (5%Ni+x%Ce/La2O3+ZrO2, where x = 0, 1, 2, 2.5, 3, 5) were synthesized via the wet impregnation technique and tested for methane reforming with carbon dioxide at atmospheric pressure, 700 °C and 42, 000 ml/gcat.h gas hourly space velocity. The fresh catalysts were subjected to different characterization techniques such as X-ray diffraction, Surface area and pore analysis, H2-temperature programmed reduction, CO2-temperature programmed desorption and thermogravimetric analysis (TGA). A fine correlation between characterization results and catalytic activity is found. The results of the reactions indicated that 5%Ni/La2O3+ZrO2 has the lowest conversion which increased with the percentage loading of CeO2 up to 2.5 wt % and then began to decline. This suggests that 2.5 wt % loading is the optimum for CH4 and CO2 conversion. This particular catalyst composition has NiO species that could be reduced easily, as well as dense and wide distribution of all type of basic sites with respect to other catalyst system. The used catalysts were again subjected to TGA and RAMAN analysis where the least carbon deposition and the least deactivation factor was observed for 5%Ni+5%Ce/La2O3+ZrO2 catalysts.

ACS Style

Samsudeen Olajide Kasim; Ahmed Sadeq Al-Fatesh; Ahmed Aidid Ibrahim; Rawesh Kumar; Ahmed Elhag Abasaeed; Anis Hamza Fakeeha. Impact of Ce-Loading on Ni-catalyst supported over La2O3+ZrO2 in methane reforming with CO2. International Journal of Hydrogen Energy 2020, 45, 33343 -33351.

AMA Style

Samsudeen Olajide Kasim, Ahmed Sadeq Al-Fatesh, Ahmed Aidid Ibrahim, Rawesh Kumar, Ahmed Elhag Abasaeed, Anis Hamza Fakeeha. Impact of Ce-Loading on Ni-catalyst supported over La2O3+ZrO2 in methane reforming with CO2. International Journal of Hydrogen Energy. 2020; 45 (58):33343-33351.

Chicago/Turabian Style

Samsudeen Olajide Kasim; Ahmed Sadeq Al-Fatesh; Ahmed Aidid Ibrahim; Rawesh Kumar; Ahmed Elhag Abasaeed; Anis Hamza Fakeeha. 2020. "Impact of Ce-Loading on Ni-catalyst supported over La2O3+ZrO2 in methane reforming with CO2." International Journal of Hydrogen Energy 45, no. 58: 33343-33351.

Journal article
Published: 29 October 2020 in Molecules
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Catalysts of 10% Ni, supported on promoted alumina, were used to accomplish the partial oxidation of methane. The alumina support was doped with oxides of Mo, Mg, Ti and Y. An incipient wetness impregnation technique was used to synthesize the catalysts. The physicochemical properties of the catalysts were described by XRD, H2-TPR (temperature programmed reduction), BET, TGA, CO2-TPD (temperature-programmed desorption) and Raman. The characterization results denoted that Ni has a strong interaction with the support. The TGA investigation of spent catalysts displayed the anticoking enhancement of the promoters. The impact of the support promoters on the catalyst stability, methane conversion and H2 yield was inspected. Stability tests were done for 460 min. The H2 yields were 76 and 60% and the CH4 conversions were 67 and 92%, respectively, over Ni/Al2O3+Mg, when the reaction temperatures were 550 and 650 °C, respectively. The performance of the present work was compared to relevant findings in the literature.

ACS Style

Ahmed A. Ibrahim; Wasim U. Khan; Fahad Al-Mubaddel; Ahmed S. Al-Fatesh; Samsudeen O. Kasim; Sofiu L. Mahmud; Ateyah A. Al-Zahrani; M. Rafiq H. Siddiqui; Anis H. Fakeeha. Study of Partial Oxidation of Methane by Ni/Al2O3 Catalyst: Effect of Support Oxides of Mg, Mo, Ti and Y as Promoters. Molecules 2020, 25, 5029 .

AMA Style

Ahmed A. Ibrahim, Wasim U. Khan, Fahad Al-Mubaddel, Ahmed S. Al-Fatesh, Samsudeen O. Kasim, Sofiu L. Mahmud, Ateyah A. Al-Zahrani, M. Rafiq H. Siddiqui, Anis H. Fakeeha. Study of Partial Oxidation of Methane by Ni/Al2O3 Catalyst: Effect of Support Oxides of Mg, Mo, Ti and Y as Promoters. Molecules. 2020; 25 (21):5029.

Chicago/Turabian Style

Ahmed A. Ibrahim; Wasim U. Khan; Fahad Al-Mubaddel; Ahmed S. Al-Fatesh; Samsudeen O. Kasim; Sofiu L. Mahmud; Ateyah A. Al-Zahrani; M. Rafiq H. Siddiqui; Anis H. Fakeeha. 2020. "Study of Partial Oxidation of Methane by Ni/Al2O3 Catalyst: Effect of Support Oxides of Mg, Mo, Ti and Y as Promoters." Molecules 25, no. 21: 5029.

Journal article
Published: 17 August 2020
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The generation of synthesis gas (hydrogen and carbon monoxide mixture) from two global warming gases of carbon dioxide and methane via dry reforming is environmentally crucial and for the chemical industry as well. Herein, magnesium-promoted NiO supported on mesoporous zirconia, 5Ni/xMg-ZrO2 (x = 0, 3, 5, 7 wt%) were prepared by wet impregnation method and then were tested for syngas production via dry reforming of methane. The reaction temperature at 800 °C was found more catalytically active than that at 700 °C due to the endothermic feature of reaction which promotes efficient CH4 catalytic decomposition over Ni and Ni-Zr interface as confirmed by CH4-TSPR experiment. NiO-MgO solid solution interacted with ZrO2 support was found crucial and the reason for high CH4 and CO2 conversions. The highest catalyst stability of the 5Ni/3Mg-ZrO2 catalyst was explained by the ability of CO2 to partially oxidize the carbon deposit over the surface of the catalyst. A mole ratio of hydrogen to carbon monoxide near unity (H2/CO ~ 1) was obtained over 5Ni/ZrO2 and 5Ni/5Mg-ZrO2, implying the important role of basic sites. Our approach opens doors for designing cheap and stable dry reforming catalysts from two potent greenhouse gases which could be of great interest for many industrial applications, including syngas production and other value-added chemicals.

ACS Style

Ahmed S. Al-Fatesh; Rawesh Kumar; Anis H. Fakeeha; Samsudeen O. Kasim; Jyoti Khatri; Ahmed A. Ibrahim; Rasheed Arasheed; Muhamad Alabdulsalam; Mahmud S. Lanre; Ahmed I. Osman; Ahmed E. Abasaeed; Abdulaziz Bagabas. Promotional effect of magnesium oxide for a stable nickel-based catalyst in dry reforming of methane. 2020, 10, 13861 .

AMA Style

Ahmed S. Al-Fatesh, Rawesh Kumar, Anis H. Fakeeha, Samsudeen O. Kasim, Jyoti Khatri, Ahmed A. Ibrahim, Rasheed Arasheed, Muhamad Alabdulsalam, Mahmud S. Lanre, Ahmed I. Osman, Ahmed E. Abasaeed, Abdulaziz Bagabas. Promotional effect of magnesium oxide for a stable nickel-based catalyst in dry reforming of methane. . 2020; 10 (1):13861.

Chicago/Turabian Style

Ahmed S. Al-Fatesh; Rawesh Kumar; Anis H. Fakeeha; Samsudeen O. Kasim; Jyoti Khatri; Ahmed A. Ibrahim; Rasheed Arasheed; Muhamad Alabdulsalam; Mahmud S. Lanre; Ahmed I. Osman; Ahmed E. Abasaeed; Abdulaziz Bagabas. 2020. "Promotional effect of magnesium oxide for a stable nickel-based catalyst in dry reforming of methane." 10, no. 1: 13861.

Journal article
Published: 16 August 2020 in Applied Catalysis B: Environmental
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Coking is the major bottleneck in the development of stable catalysts in thermal catalysis. Oxygen vacancies (Vo) play a vital role in realizing the in situ gasification of carbon deposits and the activation of reacting gases, thus leading to the stable activity. Ceria is a potential candidate that provides plentiful Vo, however, Vo annihilated as a result of thermal aging. In this study, by using a novel Ni-Ce/W-Zr catalyst, thermal aging turned as a ‘blessing in disguise’, because a tremendous amount of Vo was sequentially generated following the thermal aging. The findings were substantiated by TEM, XRD, BET, XPS, Raman spectroscopy, TGA, TPO, TPR and CO2-TPD. In the early stages, CeO2 and ZrO2 formed the solid solution, supplying the oxygen vacancies. Subsequently, Ce2(WO4)3 comes into play as a result of thermal aging and furnish the abundant oxygen vacancies. Thus, the sequential generation of oxygen vacancies suppressed the coke formation on one hand, whereas tangibly controlled the sintering of metallic species on the other hand. Consequently, Ni-Ce/W-Zr catalyst demonstrated the remarkable activity and outstanding stability (100 h).

ACS Style

Ahmed S. Al-Fatesh; Yasir Arafat; Samsudeen O. Kasim; Ahmed A. Ibrahim; Ahmed E. Abasaeed; Anis H. Fakeeha. In situ auto-gasification of coke deposits over a novel Ni-Ce/W-Zr catalyst by sequential generation of oxygen vacancies for remarkably stable syngas production via CO2-reforming of methane. Applied Catalysis B: Environmental 2020, 280, 119445 .

AMA Style

Ahmed S. Al-Fatesh, Yasir Arafat, Samsudeen O. Kasim, Ahmed A. Ibrahim, Ahmed E. Abasaeed, Anis H. Fakeeha. In situ auto-gasification of coke deposits over a novel Ni-Ce/W-Zr catalyst by sequential generation of oxygen vacancies for remarkably stable syngas production via CO2-reforming of methane. Applied Catalysis B: Environmental. 2020; 280 ():119445.

Chicago/Turabian Style

Ahmed S. Al-Fatesh; Yasir Arafat; Samsudeen O. Kasim; Ahmed A. Ibrahim; Ahmed E. Abasaeed; Anis H. Fakeeha. 2020. "In situ auto-gasification of coke deposits over a novel Ni-Ce/W-Zr catalyst by sequential generation of oxygen vacancies for remarkably stable syngas production via CO2-reforming of methane." Applied Catalysis B: Environmental 280, no. : 119445.

Journal article
Published: 16 July 2020 in Catalysts
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An environmentally-benign way of producing hydrogen is methane decomposition. This study focused on methane decomposition using Fe and Fe-Ni catalysts, which were dispersed over different supports by the wet-impregnation method. We observed the effect of modifying ZrO2 with La2O3 and WO3 in terms of H2 yield and carbon deposits. The modification led to a higher H2 yield in all cases and WO3-modified support gave the highest yield of about 90% and was stable throughout the reaction period. The reaction conditions were at 1 atm, 800 °C, and 4000 mL(hgcat)−1 space velocity. Adding Ni to Fe/x-ZrO2 gave a higher H2 yield and stability for ZrO2 and La2O3 + ZrO2-supported catalysts whose prior performances and stabilities were very poor. Catalyst samples were analyzed by characterization techniques like X-ray diffraction (XRD), nitrogen physisorption, temperature-programmed reduction (TPR), thermo-gravimetric analysis (TGA), and Raman spectroscopy. The phases of iron and the supports were identified using XRD while the BET revealed a significant decrease in the specific surface areas of fresh catalysts relative to supports. A progressive change in Fe’s oxidation state from Fe3+ to Fe0 was observed from the H2-TPR results. The carbon deposits on Fe/ZrO2 and Fe/La2O3 + ZrO2 are mainly amorphous, while Fe/WO3 + ZrO2 and Fe-Ni/x-ZrO2 are characterized by graphitic carbon.

ACS Style

Fahad Al-Mubaddel; Samsudeen Kasim; Ahmed A. Ibrahim; Abdulrhman S. Al-Awadi; Anis H. Fakeeha; Ahmed S. Al-Fatesh. H2 Production from Catalytic Methane Decomposition Using Fe/x-ZrO2 and Fe-Ni/(x-ZrO2) (x = 0, La2O3, WO3) Catalysts. Catalysts 2020, 10, 793 .

AMA Style

Fahad Al-Mubaddel, Samsudeen Kasim, Ahmed A. Ibrahim, Abdulrhman S. Al-Awadi, Anis H. Fakeeha, Ahmed S. Al-Fatesh. H2 Production from Catalytic Methane Decomposition Using Fe/x-ZrO2 and Fe-Ni/(x-ZrO2) (x = 0, La2O3, WO3) Catalysts. Catalysts. 2020; 10 (7):793.

Chicago/Turabian Style

Fahad Al-Mubaddel; Samsudeen Kasim; Ahmed A. Ibrahim; Abdulrhman S. Al-Awadi; Anis H. Fakeeha; Ahmed S. Al-Fatesh. 2020. "H2 Production from Catalytic Methane Decomposition Using Fe/x-ZrO2 and Fe-Ni/(x-ZrO2) (x = 0, La2O3, WO3) Catalysts." Catalysts 10, no. 7: 793.

Original research article
Published: 29 April 2020 in Frontiers in Chemistry
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A leading method for hydrogen production that is free of carbon oxides is catalytic methane decomposition. In this research, Fe and Fe–Ni supported catalysts prepared by the wet impregnation method were used in methane decomposition. The effects of doping the parent support (ZrO2) with La2O3 and WO3 were studied. It was discovered that the support doped with La2O3 gave the best performance in terms of CH4 conversion, H2 yield, and stability at the test condition, 800°C and 4,000-ml h−1 g−1 cat. space velocity. The addition of Ni significantly improved the performance of all the monometallic catalysts. The catalysts were characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), temperature-programmed reduction/oxidation (TPR/TPO), thermogravimetric analyzer (TGA), and microscopy (SEM and Raman) techniques. Phases of the different forms of Fe were identified by XRD. BET showed a drastic decline in the specific surface area of the catalysts with respect to the supports. TPR profiles revealed a progressive change in the valency of Fe in its combined form to the zero valence-free metal. The La2O3-promoted support gave the best performance and maintained good stability during the time on stream.

ACS Style

Anis H. Fakeeha; Samsudeen Olajide Kasim; Ahmed Aidid Ibrahim; Abdulrhman S. Al-Awadi; Eman Alzahrani; Ahmed Elhag Abasaeed; Ahmed E. Awadallah; Ahmed Sadeq Al-Fatesh. Methane Decomposition Over ZrO2-Supported Fe and Fe–Ni Catalysts—Effects of Doping La2O3 and WO3. Frontiers in Chemistry 2020, 8, 1 .

AMA Style

Anis H. Fakeeha, Samsudeen Olajide Kasim, Ahmed Aidid Ibrahim, Abdulrhman S. Al-Awadi, Eman Alzahrani, Ahmed Elhag Abasaeed, Ahmed E. Awadallah, Ahmed Sadeq Al-Fatesh. Methane Decomposition Over ZrO2-Supported Fe and Fe–Ni Catalysts—Effects of Doping La2O3 and WO3. Frontiers in Chemistry. 2020; 8 ():1.

Chicago/Turabian Style

Anis H. Fakeeha; Samsudeen Olajide Kasim; Ahmed Aidid Ibrahim; Abdulrhman S. Al-Awadi; Eman Alzahrani; Ahmed Elhag Abasaeed; Ahmed E. Awadallah; Ahmed Sadeq Al-Fatesh. 2020. "Methane Decomposition Over ZrO2-Supported Fe and Fe–Ni Catalysts—Effects of Doping La2O3 and WO3." Frontiers in Chemistry 8, no. : 1.

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.