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51V And 31P NMR Studies of VOx/TiO2 Catalysts Modified by Phosphorous Full article

Journal Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169
Output data Year: 2000, Volume: 162, Number: 1-2, Pages: 381-390 Pages count : 10 DOI: 10.1016/S1381-1169(00)00305-8
Tags MQMAS, NMR, Phosphorous, SATRAS, Solid-state, Spin mapping echo, Titanium oxide, Vanadium
Authors Lapina O.B. 1 , Khabibulin D.F. 1 , Shubin A.A. 1 , Bondareva V.M. 1
Affiliations
1 Boreskov Institute of Catalysis, Pr. Lavrentieva 5, 630090, Novosibirsk, Russia

Funding (3)

1 Russian Foundation for Basic Research 98-03-32323
2 North Atlantic Treaty Organization SfP-971984
3 International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union IR-97-0059

Abstract: Phosphorous-doped VOx/TiO2 catalysts prepared by the spray-drying method and treated under catalytic reaction, as well as individual phases (αI-, αII-, β-) of VOPO4 were studied using modern high-resolution solid-state NMR techniques, including fast magic angle spinning (MAS), combined with the analysis of rotational satellites intensities by the satellite transition spectroscopy (SATRAS) method; 2D triple-quantum, quintuple-quantum MAS NMR, and spin mapping echo experiments. The simultaneous determination of chemical shielding anisotropy and quadrupole tensor parameters, as well as their distributions, permits to draw a conclusion on the local environment of vanadium sites in the catalysts. The formation of a triple V–P–Ti compound in phosphorous-doped VOx/TiO2 catalysts has been revealed. Only one type of slightly distorted tetrahedral vanadium atoms bound via oxygen to phosphorous was found in this compound. The very large distribution of the quadropole constant points to the irregular structure of this compound.
Cite: Lapina O.B. , Khabibulin D.F. , Shubin A.A. , Bondareva V.M.
51V And 31P NMR Studies of VOx/TiO2 Catalysts Modified by Phosphorous
Journal of Molecular Catalysis A: Chemical. 2000. V.162. N1-2. P.381-390. DOI: 10.1016/S1381-1169(00)00305-8 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Published online: Oct 26, 2000
Published print: Nov 20, 2000
Identifiers:
Web of science: WOS:000165621200032
Scopus: 2-s2.0-0034693821
Elibrary: 29445392
Chemical Abstracts: 2000:893072
Chemical Abstracts (print): 134:33387
OpenAlex: W2186018044
Citing:
DB Citing
Web of science 28
Scopus 30
Elibrary 30
OpenAlex 31
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