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Highly efficient nickel-niobia composite catalysts for hydrogenation of CO2 to methane

Gnanakumar, ES and Chandran, N and Kozhevnikov, IV and Grau-Atienza, A and Ramos Fernández, EV and Sepulveda-Escribano, A and Shiju, NR (2019) Highly efficient nickel-niobia composite catalysts for hydrogenation of CO2 to methane. In: Chemical Engineering Science . pp. 2-9.

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Official URL: https://doi.org/10.1016/j.ces.2018.08.038


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 CO2 hydrogenation in a flow reactor. 40 wt% was found to be the optimum Ni loading, which resulted in CO2 conversion of 81% at 325 °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 Nb2O5, which was calcined at 700 °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.

Item Type: Journal Article
Publication: Chemical Engineering Science
Publisher: Elsevier Ltd
Additional Information: The copyright for this article belongs to the Author(s).
Keywords: Calcination; Carbon dioxide; Catalysis; Catalysts; Hydrogenation; Methanation; Methane; Niobium oxide, Calcination temperature; Catalytic hydrogenation; Catalytic performance; CO2 hydrogenation; CO2 utilisation; Composite catalysts; Niobia; Wet impregnation, Nickel
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 28 Oct 2022 05:51
Last Modified: 28 Oct 2022 05:51
URI: https://eprints.iisc.ac.in/id/eprint/77723

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