Health & Environmental Research Online (HERO)


Print Feedback Export to File
6004014 
Journal Article 
Preparation and characterization of Ni based catalysts for the catalytic partial oxidation of methane: Effect of support basicity on H-2/CO ratio and carbon deposition 
Ozdemir, H; Oksuzomer, MAF; Gurkaynak, M 
2010 
Yes 
International Journal of Hydrogen Energy
ISSN: 0360-3199 
35 
22 
12147-12160 
WOS:000284298200001 
The catalytic partial oxidation of methane (CPOM) was studied on Ni based catalysts. Catalysts were prepared by wet impregnation method and characterized by using AAS, BET, XRD, HRTEM, TPR, TPO, Raman Spectroscopy and TPSR techniques. The prepared catalysts showed nearly 95% CH4 conversion and nearly 96% H2 selectivity under the flow of 157,500 (L kg−1 h−1) with the ratio of CH4/O2 = 2 by using air as an oxidant at 1 atm and 800 °C. Support basicity greatly influenced the H2/CO ratio and carbon deposition. It was found that the lowest carbon deposition occurred on Ni impregnated MgO catalyst. Considering the results, it was found that Ni/MgO catalyst with 10% Ni content would be the best catalyst amongst Ni/Al2O3, Ni/MgO/Al2O3, Ni/MgAl2O4 and Ni/Sorbacid for the CPOM only under more reductive conditions. Under optimum conditions, Ni/MgO showed poor performance and therefore Ni/Sorbacid would be the ideal catalyst because of its greater carbon resistance than the other catalysts. 
Cat ilytic partial oxidation of methane; Nickel based catalyst; Impregnation; Carbon deposition; Synthesis gas