VMoNbTeO Catalysts for Ethane Oxidative Dehydrogenation: The Modification by P, Sb and Bi to Influence on the Catalytic Stability Full article
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Юбилейная научная конференция "XXI век: Химия в жизнь" 24-26 Apr 2019 , Омск |
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| Source | 21st Century: Chemistry to Life Compilation, 2019. ISBN 978-0-7354-1888-2. |
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AIP Conference Proceedings
ISSN: 0094-243X , E-ISSN: 1551-7616 |
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| Output data | Year: 2019, Volume: 2143, Article number : 020029, Pages count : 5 DOI: 10.1063/1.5122928 | ||
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Funding (1)
| 1 | Russian Science Foundation | 17-73-20073 |
Abstract:
Multicomponent VMoNbTe oxide catalysts are the most promising in the oxidative dehydrogenation of ethane to ethylene. Despite a high scientific attention, the problem of instability of this catalyst under reducing conditions remains unresolved. In this work, the effect of VMoNbTe modification by phosphorus, stibium and bismuth on the catalytic stability of the active M1 phase was studied. XRD and XPS data showed that due to homogeneous distribution in the bulk, introduction of Bi and Sb resulted in decrease of M1 phase content. Modification by P had less effect on the phase composition due to its surface enrichment. XPS showed the phosphate-like environment for phosphorus species, oxidized Sb species in form of Sb3+, or Sb5+, and Bi3+ state for the introduced cations. The catalytic stability tests were performed using developed express-test that involves high-temperature (up to 480°C) treatment in the reaction mixture with different ethane/oxygen ratio. The additives Bi and P have a positive effect on the stability of the catalyst, reducing the loss of catalytic characteristics when operating under severe reducing conditions.
Cite:
Kardash T.Y.
, Lazareva E.V.
, Svintsitskiy D.A.
, Bondareva V.M.
VMoNbTeO Catalysts for Ethane Oxidative Dehydrogenation: The Modification by P, Sb and Bi to Influence on the Catalytic Stability
In compilation 21st Century: Chemistry to Life. 2019. – ISBN 978-0-7354-1888-2. DOI: 10.1063/1.5122928 WOS Scopus РИНЦ AN OpenAlex
VMoNbTeO Catalysts for Ethane Oxidative Dehydrogenation: The Modification by P, Sb and Bi to Influence on the Catalytic Stability
In compilation 21st Century: Chemistry to Life. 2019. – ISBN 978-0-7354-1888-2. DOI: 10.1063/1.5122928 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Published online: | Aug 16, 2019 |
Identifiers:
| Web of science: | WOS:000505769900029 |
| Scopus: | 2-s2.0-85071261242 |
| Elibrary: | 41658974 |
| Chemical Abstracts: | 2019:2069952 |
| OpenAlex: | W2967805337 |