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.
|
PDF
che_eng_sci_2-9_2019.pdf - Published Version Download (2MB) | Preview |
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.
| 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 |
Actions (login required)
 |
View Item |
