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

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Title: Highly efficient nickel-niobia composite catalysts for hydrogenation of CO2 to methane
Authors: Gnanakumar, Edwin S. | Chandran, Narendraraj | Kozhevnikov, Ivan V. | Grau-Atienza, Aida | Ramos-Fernández, Enrique V. | Sepúlveda-Escribano, Antonio | Shiju, N. Raveendran
Research Group/s: Materiales Avanzados | Laboratorio de Nanotecnología Molecular (NANOMOL)
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Niobia | CO2 utilisation | Methanation | Nickel | Heterogeneous catalysis | Methane
Knowledge Area: Química Inorgánica
Issue Date: 19-Aug-2018
Publisher: Elsevier
Citation: Chemical Engineering Science. 2019, 194: 2-9. doi:10.1016/j.ces.2018.08.038
Abstract: 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.
Sponsor: E.S.G. and N.R.S acknowledge the financial support from NOW CAPITA project (732.013.002). ASE acknowledges the financial support from the MINECO projects MAT-2013-45008-P and MAT2016-81732-ERC. EVRF gratefully acknowledge support from MINECO for his Ramón y Cajal grant (RyC-2012-11427) and University of Alicante for the project GRE-13-31. Generalitat Valenciana is also acknowledged for financial support (PROMETEOII/ 2014/004).
URI: http://hdl.handle.net/10045/82751
ISSN: 0009-2509 (Print) | 1873-4405 (Online)
DOI: 10.1016/j.ces.2018.08.038
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 Published by Elsevier Ltd.
Peer Review: si
Publisher version: https://doi.org/10.1016/j.ces.2018.08.038
Appears in Collections:INV - LMA - Artículos de Revistas
INV - NANOMOL - Artículos de Revistas

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