Oxidative Dehydrogenation of Ethane over M1 MoVNbTeO Catalysts Modified by the Addition of Nd, Mn, Ga or Ge Full article
| Conference |
6th European Conference on Environmental Applications of Advanced Oxidation Processes 26-30 Jun 2019 , Portorož – Portorose |
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| Journal |
Catalysis Today
ISSN: 0920-5861 , E-ISSN: 1873-4308 |
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| Output data | Year: 2020, Volume: 361, Pages: 50-56 Pages count : 7 DOI: 10.1016/j.cattod.2019.12.029 | ||||
| Tags | Gallium; Germanium; Manganese; MoVNbTeO; Neodymium; Oxidative dehydrogenation of ethane | ||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Science Foundation | 17-73-20073 |
Abstract:
Modification by Nd, Mn, Ga, and Ge substantially affect both physicochemical and catalytic properties of MoVNbTeO oxides in the oxidative dehydrogenation of ethane (ODE). The introduction of modifying additives changes the content of the M1 phase, surface acidity, and surface composition. It does not have an influence on the state of Mo, V, Nb, and Te on catalyst surface, but it induces surface enrichment (Ga, Mn) or depletion (Ge, Nd) by the modifying element. All of these additives have positive effects on catalytic properties at the M/Mo (M = modifying element) ratio of 0.0075 ÷ 0.025. They exhibit an increase of activity and prevent ethylene over-oxidation. The relationship between the rate constant of total ethane transformation and the M1 content confirms that this phase is active in ODE. The correlation between ethylene selectivity and the relative number of intermediate acid sites is revealed, indicating the role of surface acidity on ethylene over-oxidation. © 2019 Elsevier B.V.
Cite:
Lazareva E.V.
, Bondareva V.M.
, Svintsitskiy D.A.
, Ishchenko A.V.
, Marchuk A.S.
, Kovalev E.P.
, Kardash T.Y.
Oxidative Dehydrogenation of Ethane over M1 MoVNbTeO Catalysts Modified by the Addition of Nd, Mn, Ga or Ge
Catalysis Today. 2020. V.361. P.50-56. DOI: 10.1016/j.cattod.2019.12.029 WOS Scopus РИНЦ AN OpenAlex
Oxidative Dehydrogenation of Ethane over M1 MoVNbTeO Catalysts Modified by the Addition of Nd, Mn, Ga or Ge
Catalysis Today. 2020. V.361. P.50-56. DOI: 10.1016/j.cattod.2019.12.029 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Sep 30, 2019 |
| Accepted: | Dec 24, 2019 |
| Published online: | Dec 28, 2019 |
| Published print: | Feb 1, 2021 |
Identifiers:
| Web of science: | WOS:000598224600009 |
| Scopus: | 2-s2.0-85077344579 |
| Elibrary: | 43231990 |
| Chemical Abstracts: | 2020:45112 |
| OpenAlex: | W2998403101 |