Ex situ EPR investigation of MoO3/Al2O3 catalysts for propylene metathesis Full article
| Conference |
VI Всероссийская научная молодежная школа-конференция «Химия под знаком СИГМА: исследования, инновации, технологии" 18-20 May 2020 , Омск |
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| Journal |
AIP Conference Proceedings
ISSN: 0094-243X , E-ISSN: 1551-7616 |
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| Output data | Year: 2020, Volume: 2301, Article number : 040020, Pages count : 4 DOI: 10.1063/5.0032830 | ||
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| Affiliations |
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Funding (1)
| 1 | Ministry of Science and Higher Education of the Russian Federation | 46.2.5 |
Abstract:
A series of propylene metathesis MoO3/Al2O3 catalysts (2–10 wt. % of MoO3) activated in Ar and under ex situ reaction conditions was studied by EPR spectroscopy. Similar EPR signals from surface molybdate clusters (Mo5+) were observed for each sample. The concentration of pentavalent molybdenum in paramagnetic form determined by EPR increases with an increase in the MoO3 content from 2 to 5 wt. %, then changes slightly. It was also found that the activity of the catalysts in the propylene metathesis reaction is proportional to the increment in the concentration of Mo5+ paramagnetic species determined after contact with propylene. This indicates that higher oxidation states of molybdenum form active paramagnetic complexes during the reaction with propylene.
Cite:
Yurpalov V.L.
, Karpova T.R.
, Moiseenko M.A.
, Drozdov V.A.
, Buluchevskiy E.A.
, Lavrenov A.V.
Ex situ EPR investigation of MoO3/Al2O3 catalysts for propylene metathesis
AIP Conference Proceedings. 2020. V.2301. 040020 :1-4. DOI: 10.1063/5.0032830 Scopus РИНЦ OpenAlex
Ex situ EPR investigation of MoO3/Al2O3 catalysts for propylene metathesis
AIP Conference Proceedings. 2020. V.2301. 040020 :1-4. DOI: 10.1063/5.0032830 Scopus РИНЦ OpenAlex
Dates:
| Published online: | Dec 8, 2020 |
Identifiers:
| Scopus: | 2-s2.0-85098087728 |
| Elibrary: | 45058107 |
| OpenAlex: | W3112775972 |