Structural and Reactive Relevance of V + Nb Coverage on Alumina of V{single bond}Nb{single bond}O/Al2O3 Catalytic Systems Full article
| Journal |
Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694 |
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| Output data | Year: 2008, Volume: 255, Number: 1, Pages: 94-103 Pages count : 10 DOI: 10.1016/j.jcat.2008.01.029 | ||||||
| Tags | 1H MAS NMR, 27Al MAS NMR, Alumina, FTIR, In situ, Methanol probe reaction, Supported vanadia-niobia | ||||||
| Authors |
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| Affiliations |
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Funding (5)
| 1 | Russian Foundation for Basic Research | 07-03-00695 |
| 2 | European Commission | D36/0006/06 |
| 3 | Ministry of Economic Affairs and Digital Transformation | CTQ2005-02802/PPQ |
| 4 | North Atlantic Treaty Organization | ESP.NR. NRCLG 981857 |
| 5 | Ministry of Science and Higher Education | 118/COS/2007/03 |
Abstract:
Vanadium and niobium species (together and separately) were loaded on gamma alumina, and the resulting catalysts were run in the methanol conversion. This reaction was studied by both GC analysis and FTIR study in the flow system. The catalytic properties are discussed based on the combined FTIR and 27Al, 51V and 1H MAS NMR studies. The NMR studies revealed a different mechanism of interaction between Nb and Al2O3 than that between V and Al2O3. This predetermines the structure of vanadium sites in bimetallic VNb/Al samples. The effect of coverage was considered for various metal loadings ranging from below to above monolayer. One of our most interesting findings is that the surface Nb oxide species exhibited a redox character below monolayer but were acidic above monolayer. 27Al MAS NMR revealed a strong alumina–Nb interaction that may account for its redox performance. Moreover, the role of sulfate from vanadium precursor is evidenced.
Cite:
Lewandowska A.E.
, Bañares M.A.
, Ziolek M.
, Khabibulin D.F.
, Lapina O.B.
Structural and Reactive Relevance of V + Nb Coverage on Alumina of V{single bond}Nb{single bond}O/Al2O3 Catalytic Systems
Journal of Catalysis. 2008. V.255. N1. P.94-103. DOI: 10.1016/j.jcat.2008.01.029 WOS Scopus РИНЦ ANCAN OpenAlex
Structural and Reactive Relevance of V + Nb Coverage on Alumina of V{single bond}Nb{single bond}O/Al2O3 Catalytic Systems
Journal of Catalysis. 2008. V.255. N1. P.94-103. DOI: 10.1016/j.jcat.2008.01.029 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Nov 23, 2007 |
| Accepted: | Jan 23, 2008 |
| Published online: | Mar 6, 2008 |
| Published print: | Apr 1, 2008 |
Identifiers:
| Web of science: | WOS:000254966500010 |
| Scopus: | 2-s2.0-40249109758 |
| Elibrary: | 13573212 |
| Chemical Abstracts: | 2008:325211 |
| Chemical Abstracts (print): | 148:426327 |
| OpenAlex: | W2039927316 |