Repositori institucional URV
| URV's Author/s: | ABELLÓ CROS, SÒNIA; C. Berrueco; GISPERT GUIRADO, FRANCESC; MONTANÉ CALAF, DANIEL |
| Author, as appears in the article.: | S. Abelló; C. Berrueco; F. Gispert-Guirado; D. Montané |
| Author identifier: | 0000-0001-8624-306X; 0000-0002-6253-3465; n/a; 0000-0002-5273-8870 |
| Journal publication year: | 2016 |
| Publication Type: | Article |
| ISSN: | 2044-4753 |
| Abstract: | Takovite-derived mixed oxides in Ni/Al molar ratios from 1 to 3 have been used as catalysts in hydrogenation of CO2 to CH4. The catalysts were characterized by XRD, BET, TEM, TGA, and H2-TPR, and monitored by in situ DRIFTS under reaction conditions. The catalytic performance for the CO2 methanation has been investigated in a fixed-bed reactor at the temperature range from 225 to 400°C and pressures of 10.0 and 1.0 bar(g). Takovite decomposition leads to the formation of a NiO phase containing Al ions and a nickel-containing alumina phase (Ni-deficient spinel). The percentage of spinel increases upon decreasing the Ni/Al ratio, and consequently, a lower amount of metallic nickel after subsequent reduction is achieved. All catalysts were partially reduced upon time on stream, leading to the formation of small Ni0 crystallites (ca. 3 nm) dispersed on a NiAl2O4 matrix. The most active and selective catalyst was the one with a Ni/Al ratio of 2, which was also very stable after a 500 h lifetime test at atmospheric pressure and 275°C. |
| Article's DOI: | 10.1039/c5cy01200g |
| Link to the original source: | https://pubs.rsc.org/en/content/articlelanding/2016/CY/C5CY01200G#!divAbstract |
| Papper version: | info:eu-repo/semantics/acceptedVersion |
| licence for use: | https://creativecommons.org/licenses/by/3.0/es/ |
| Department: | Enginyeria Química |
| Research group: | BioRefinery Technologies (Bio-Core) |
| Licence document URL: | https://repositori.urv.cat/ca/proteccio-de-dades/ |
| Thematic Areas: | Chemical engineering |
| Keywords: | Hydrogenation of CO Synthetic natural gas hydrogenation |
| Entity: | Universitat Rovira i Virgili |
| Record's date: | 2016-05-04 |
| First page: | 2305 |
| Last page: | 2317 |
| Journal volume: | 6 |
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| DocumentPrincipal | DocumentPrincipal | application/pdf |
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