Mechanistic Study of Selective Oxidation of Methanol over a Monolayer V2O5/CeO2 Catalyst Full article
| Journal |
The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455 |
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| Output data | Year: 2024, Volume: 128, Number: 8, Pages: 3193–3203 Pages count : 11 DOI: 10.1021/acs.jpcc.3c07378 | ||||
| Tags | Atmospheric pressure; Catalysts; Formaldehyde; Fourier transform infrared spectroscopy; Methanol; Monolayers; Oxidation; Reaction intermediates; Vanadium pentoxide; X ray photoelectron spectroscopy | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | FWUR-2024-0032 |
Abstract:
An operando Fourier transform infrared spectroscopy (FTIRS) study of the oxidation of methanol over a monolayer V2O5/CeO2 catalyst was carried out at atmospheric pressure in a temperature range of 150–300 °C. It was found that the oxidation starts at 200 °C, when the main products─methyl formate and dimethoxymethane─are formed with a selectivity of 62 and 38%, respectively. An increase in the reaction temperature initiates the formation of formaldehyde, CO, and CO2, and at 300 °C, CO becomes the main reaction product. The main reaction intermediates are methoxy groups, formates, dioxymethylene species, and adsorbed formaldehyde. According to X-ray photoelectron spectroscopy (XPS) studies, the reaction involves a reversible reduction of V5+ and Ce4+ cations, indicating that both vanadia and ceria are involved in the oxidation of methanol. A reaction mechanism of the oxidation of methanol over supported vanadium oxide catalysts is discussed.
Cite:
Litvintseva K.A.
, Chesalov Y.A.
, Selivanova A.V.
, Saraev A.A.
, Kaichev V.V.
Mechanistic Study of Selective Oxidation of Methanol over a Monolayer V2O5/CeO2 Catalyst
The Journal of Physical Chemistry C. 2024. V.128. N8. P.3193–3203. DOI: 10.1021/acs.jpcc.3c07378 WOS Scopus РИНЦ AN OpenAlex
Mechanistic Study of Selective Oxidation of Methanol over a Monolayer V2O5/CeO2 Catalyst
The Journal of Physical Chemistry C. 2024. V.128. N8. P.3193–3203. DOI: 10.1021/acs.jpcc.3c07378 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Nov 7, 2023 |
| Accepted: | Feb 2, 2024 |
| Published online: | Feb 16, 2024 |
| Published print: | Feb 29, 2024 |
Identifiers:
| Web of science: | WOS:001166829900001 |
| Scopus: | 2-s2.0-85186068006 |
| Elibrary: | 66197384 |
| Chemical Abstracts: | 2024:361884 |
| OpenAlex: | W4391910809 |