Optimization of CO2 methanation reaction over M*/Mn/Cu-Al2O3 (M*: Pd, Rh and Ru) catalysts

The catalytic activity of CO2 methanation with H-2 over Ms/Mn/Cu-Al2O3 (M* = Pd, Rh and Ru) oxide catalysts in simulated natural gas was investigated. Among them, Ru/Mn/Cu-Al2O3 catalyst was found to be the most promising catalyst. Response surface methodology involving central composite design was employed and Ru loading was found to be the most significant effective factor, followed by calcination temperature and catalyst loading. The optimum condition for CO2 conversion was at 10.9 wt.% Ru loading, calcination temperature of 1035 degrees C and catalyst loading of 5 wt.g. Interestingly, the RMC10 catalyst demonstrated good activity, stability and robustness during entire testing period which is suitable for industrial application. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.