On the Mechanism of CO and CO2 Methanation Over Ni/CeO2 Catalysts Full article
| Conference |
EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources” 30 Aug - 4 Sep 2015 , Казань |
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| Journal |
Topics in Catalysis
ISSN: 1022-5528 , E-ISSN: 1572-9028 |
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| Output data | Year: 2016, Volume: 59, Number: 15, Pages: 1424-1430 Pages count : 7 DOI: 10.1007/s11244-016-0650-7 | ||||
| Tags | Ceria, CO and CO2 methanation, Effect of chlorine, Nickel, Preferential CO methanation, Selective CO methanation | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | V.44.2.9. |
| 2 | Russian Foundation for Basic Research | 14-03-00457 |
Abstract:
The reactions of the CO and CO2 methanation in the excess of hydrogen were studied over Ni/CeO2 and Ni(Cl)/CeO2 catalysts prepared from nitrate and chloride precursors, respectively. Macrokinetic parameters of the CO and CO2 methanation over Ni/CeO2 and Ni(Cl)/CeO2 catalysts were determined. The nature of surface species during the CO and CO2 methanation over Ni/CeO2 and Ni(Cl)/CeO2 catalysts was studied by the Fourier transform infrared spectroscopy in situ technique. It was shown that the CO methanation proceeds similar ways over both Ni/CeO2 and Ni(Cl)/CeO2 catalysts via CO and H2 chemisorption on the surface of Ni particles. The CO2 methanation over Ni/CeO2 catalyst proceeds via the CO2 adsorption on the ceria surface and stepwise hydrogenation to methane through hydrocarbonate and formate intermediates by the hydrogen spilled over from Ni particles. With the Ni(Cl)/CeO2 catalyst, this reaction pathway is locked due to the ceria surface blockage by chlorine, to inhibit the CO2 methanation and therefore provide a high efficiency of Ni(Cl)/CeO2 catalyst in preferential CO methanation in the presence of CO2.
Cite:
Konishcheva M.V.
, Potemkin D.I.
, Badmaev S.D.
, Snytnikov P.V.
, Paukshtis E.A.
, Sobyanin V.A.
, Parmon V.N.
On the Mechanism of CO and CO2 Methanation Over Ni/CeO2 Catalysts
Topics in Catalysis. 2016. V.59. N15. P.1424-1430. DOI: 10.1007/s11244-016-0650-7 WOS Scopus РИНЦ ANCAN OpenAlex
On the Mechanism of CO and CO2 Methanation Over Ni/CeO2 Catalysts
Topics in Catalysis. 2016. V.59. N15. P.1424-1430. DOI: 10.1007/s11244-016-0650-7 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Published online: | Jul 20, 2016 |
| Published print: | Sep 1, 2016 |
Identifiers:
| Web of science: | WOS:000382849100016 |
| Scopus: | 2-s2.0-84984914652 |
| Elibrary: | 26705976 |
| Chemical Abstracts: | 2016:1215759 |
| Chemical Abstracts (print): | 165:368206 |
| OpenAlex: | W2483582576 |