Journal of Industrial and Engineering Chemistry, Vol.19, No.2, 698-703, March, 2013
Methanation of carbon dioxide over mesoporous Ni-Fe-Ru-Al2O3 xerogel catalysts: Effect of ruthenium content
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Mesoporous nickel (35 wt%)-iron (5 wt%)-ruthenium (x wt%)-alumina xerogel (denoted as 35Ni5Fex-RuAX) catalysts with different ruthenium contents (x = 0, 0.2, 0.4, 0.6, 0.8, and 1.0) were prepared by a single-step sol-gel method for use in the methane production from CO2 and H2. Conversion of CO2, yield for CH4, metal surface area, and the amount of desorbed carbon dioxide of the catalysts showed volcanoshaped trends with respect to ruthenium content. Experimental results revealed that metal surface area and the amount of desorbed carbon dioxide of 35Ni5FexRu catalysts were well correlated with conversion of CO2 and yield for CH4.
Keywords:Carbon dioxide methanation;Carbon dioxide;Hydrogen;Mesoporous nickel-iron-ruthenium-alumina xerogel catalyst;Single-step sol-gel method
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