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Characterization of Surface Species of Supported V2O5-Al2O3 Catalysts by 51V NMR Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Journal of Molecular Catalysis (Continued after 1994 as Journal of Molecular Catalysis A: Chemical and Journal of Molecular Catalysis B: Enzymatic)
ISSN: 0304-5102
Output data Year: 1991, Volume: 69, Number: 1, Pages: 61-73 Pages count : 13 DOI: 10.1016/0304-5102(91)80104-B
Tags OXIDE MONOLAYER CATALYSTS; LASER RAMAN; GAMMA-ALUMINA; VANADIUM; SPECTROSCOPY
Authors Lapina O.B. 1 , Mastikhin V.M. 1 , Simonova L.G. 1 , Bulgakova Yu.O. 1
Affiliations
1 Institute of Catalysis of the Siberian Branch of USSR Academy of Sciences

Abstract: 51V NMR spectra were used for the study of the interaction between vanadium oxocomplexes in solution and the Al2O3 surface, and for the identification of surface vanadium species formed over Al2O3 surface for different preparation conditions (pH, concentration of supported V, treatment temperature). At low vanadium concentration, mainly isolated tetrahedral surface complexes are formed over the Al2O3 surface, bound with one or two bonds. The increase in vanadium concentration results in the formation of surface clusters with a part of the V in a distorted octahedral environment. After treatment at 500 °C and at a V concentration of ∼ 10 wt.%, the formation of AlVO4 and V2O5 crystals over the Al2O3 surface takes place.
Cite: Lapina O.B. , Mastikhin V.M. , Simonova L.G. , Bulgakova Y.O.
Characterization of Surface Species of Supported V2O5-Al2O3 Catalysts by 51V NMR
Journal of Molecular Catalysis (Continued after 1994 as Journal of Molecular Catalysis A: Chemical and Journal of Molecular Catalysis B: Enzymatic). 1991. V.69. N1. P.61-73. DOI: 10.1016/0304-5102(91)80104-B publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Jan 2, 1991
Accepted: Jan 25, 1991
Published print: Oct 1, 1991
Published online: Oct 2, 2001
Identifiers:
publication_identifier.wos_identifier_type WOS:A1991GJ05500006
publication_identifier.scopus_identifier_type 2-s2.0-0026238373
publication_identifier.rinz_identifier_type 31095386
publication_identifier.accession_number_identifier_type 1991:616020
publication_identifier.chemical_accession_number_identifier_type 115:216020
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