Journal
CHEMICAL ENGINEERING SCIENCE
Volume 194, Issue -, Pages 2-9Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2018.08.038
Keywords
Niobia; CO2 utilisation; Methanation; Nickel; Heterogeneous catalysis; Methane
Categories
Funding
- NWO CAPITA project [732.013.002]
- MINECO [MAT-2013-45008-P, MAT2016-81732-ERC, RyC-2012-11427]
- University of Alicante [GRE-13-31]
- Generalitat Valenciana [PROMETEOII/ 2014/004]
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We studied the catalytic hydrogenation of CO2 to methane using nickel-niobia composite catalysts. Catalysts containing 10-70 wt% Ni were synthesized by wet impregnation and tested for CO 2 hydrogenation in a flow reactor. 40 wt% was found to be the optimum Ni loading, which resulted in CO2 conversion of 81% at 325 degrees C. We also calcined the Nb2O5 support at different temperatures to study the influence of calcination temperature on the catalytic performance. 40 wt% Ni loaded on Nb-2 O-5, which was calcined at 700 degrees C gave higher methanation activity (91% conversion of CO2). Time on stream study for 50 h showed a stable activity and selectivity; thus confirming the scope for practical application. (C) 2018 Published by Elsevier Ltd.
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