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Nafis Mahmud
Gas Processing Centre College of Engineering, Qatar University Doha Qatar

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Journal article
Published: 20 June 2020 in International Journal of Energy Research
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ACS Style

Nafis Mahmud; Abdelbaki Benamor; Mustafa S. Nasser; Muneer M. Ba‐Abbad; Muftah El-Naas; Hazim Qiblawey. Chemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine. International Journal of Energy Research 2020, 44, 12506 -12524.

AMA Style

Nafis Mahmud, Abdelbaki Benamor, Mustafa S. Nasser, Muneer M. Ba‐Abbad, Muftah El-Naas, Hazim Qiblawey. Chemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine. International Journal of Energy Research. 2020; 44 (15):12506-12524.

Chicago/Turabian Style

Nafis Mahmud; Abdelbaki Benamor; Mustafa S. Nasser; Muneer M. Ba‐Abbad; Muftah El-Naas; Hazim Qiblawey. 2020. "Chemical kinetics of carbon dioxide in the blends of different amino acid salts and methyldiethanolamine." International Journal of Energy Research 44, no. 15: 12506-12524.

Conference paper
Published: 01 May 2020 in IOP Conference Series: Materials Science and Engineering
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This paper reports a comparative study on the synthesis of Fe3O4 nanoparticles using three different methods, namely; Co-precipitation, Sonochemical and Solvothermal methods. Ferric chloride hexahydrate (FeCl3.6H2O) and Ferrous chloride tetrahydrate (FeCl2.4H2O) were used as the iron precursor for the Co-precipitation method; while, Ferrous sulphate Heptahydrate (FeCl2.7H2O) and Ferric chloride hexahydrate (FeCl3.6H2O) were used as the iron precursor for sonochemical and solvothermal synthesis methods, respectively. The effect of the experimental methods and the precursors used on the shape and size of the Fe3O4 nanoparticles were investigated using different characterization techniques. The chemical characterization of the samples were carried out using EDX. The size of the nanoparticles were determined using particle size analyzer. The SEM and TEM images were used study to the surface morphology of the produced nanoparticles. Finally, TGA was used to study the thermal stability of the prepared iron oxide nanoparticles.

ACS Style

Nafis Mahmud; Mustafa S. Nasser; Muftah El-Naas; Muneer M. Ba-Abbad; Abdul Wahab Mohammad; Said Mansour; Abdelbaki Benamor. Synthesis and Characterization of Fe3O4 Nanoparticles Using Different Experimental Methods. IOP Conference Series: Materials Science and Engineering 2020, 778, 1 .

AMA Style

Nafis Mahmud, Mustafa S. Nasser, Muftah El-Naas, Muneer M. Ba-Abbad, Abdul Wahab Mohammad, Said Mansour, Abdelbaki Benamor. Synthesis and Characterization of Fe3O4 Nanoparticles Using Different Experimental Methods. IOP Conference Series: Materials Science and Engineering. 2020; 778 ():1.

Chicago/Turabian Style

Nafis Mahmud; Mustafa S. Nasser; Muftah El-Naas; Muneer M. Ba-Abbad; Abdul Wahab Mohammad; Said Mansour; Abdelbaki Benamor. 2020. "Synthesis and Characterization of Fe3O4 Nanoparticles Using Different Experimental Methods." IOP Conference Series: Materials Science and Engineering 778, no. : 1.

Journal article
Published: 06 February 2019 in Processes
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: Reduction of carbon dioxide emission from natural and industrial flue gases is paramount to help mitigate its effect on global warming. Efforts are continuously deployed worldwide to develop efficient technologies for CO2 capture. The use of environment friendly amino acids as rate promoters in the present amine systems has attracted the attention of many researchers recently. In this work, the reaction kinetics of carbon dioxide with blends of N-methyldiethanolamine and L-Arginine was investigated using stopped flow technique. The experiments were performed over a temperature range of 293 to 313 K and solution concentration up to one molar of different amino acid/amine ratios. The overall reaction rate constant (kov) was found to increase with increasing temperature and amine concentration as well as with increased proportion of L-Arginine concentration in the mixture. The experimental data were fitted to the zwitterion and termolecular mechanisms using a nonlinear regression technique with an average absolute deviation (AAD) of 7.6% and 8.0%, respectively. A comparative study of the promoting effect of L-Arginine with that of the effect of Glycine and DEA in MDEA blends showed that MDEA-Arginine blend exhibits faster reaction rate with CO2 with respect to MDEA-DEA blend, while the case was converse when compared to the MDEA-Glycine blend.

ACS Style

Nafis Mahmud; Abdelbaki Benamor; Mustafa Nasser; Muftah H. El-Naas; Paitoon Tontiwachwuthikul. Reaction Kinetics of Carbon Dioxide in Aqueous Blends of N-Methyldiethanolamine and L-Arginine Using the Stopped-Flow Technique. Processes 2019, 7, 81 .

AMA Style

Nafis Mahmud, Abdelbaki Benamor, Mustafa Nasser, Muftah H. El-Naas, Paitoon Tontiwachwuthikul. Reaction Kinetics of Carbon Dioxide in Aqueous Blends of N-Methyldiethanolamine and L-Arginine Using the Stopped-Flow Technique. Processes. 2019; 7 (2):81.

Chicago/Turabian Style

Nafis Mahmud; Abdelbaki Benamor; Mustafa Nasser; Muftah H. El-Naas; Paitoon Tontiwachwuthikul. 2019. "Reaction Kinetics of Carbon Dioxide in Aqueous Blends of N-Methyldiethanolamine and L-Arginine Using the Stopped-Flow Technique." Processes 7, no. 2: 81.