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Reactivity of Methoxy Species toward CO on Keggin 12-H3PW12O40: A Study with Solid State NMR Full article

Common Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455
Output data Year: 2009, Volume: 113, Number: 45, Pages: 19639-19644 Pages count : 6 DOI: 10.1021/jp906888m
Authors Luzgin Mikhail V. 1,2 , Kazantsev Maxim S. 2 , Wang Wei 3 , Stepanov Alexander G. 1,2
Affiliations
1 Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090, Russia
2 Department of Natural Sciences, Novosibirsk State University, Pirogova Street 2, Novosibirsk 630090, Russia
3 State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Gansu 730000, People’s Republic of China

Funding (2)

1 Russian Foundation for Basic Research 08-03-92210
2 National Natural Science Foundation of China 20602016

Abstract: By using 13C solid-state NMR, monitoring the reactivity of methoxy species with carbon monoxide has been performed on 12-tungstophosphoric acid, H3PW12O40, at 423−473 K. Surface methoxy species have been selectively prepared from methanol at 293−423 K. Almost quantitative conversion of surface methoxy species into acetyl groups bound to the Keggin anion and acetic acid has been observed at 473 K. These data provide unambiguous evidence for the role of methoxy species as the intermediate of methanol and dimethyl ether carbonylation on solid H3PW12O40. The formation of a trimethyloxonium ion has been detected on the surface of heteropolyacid for the first time. The carbonylation of trimethyloxonium proceeds via the analogous mechanism through the methoxy species intermediate.
Cite: Luzgin M.V. , Kazantsev M.S. , Wang W. , Stepanov A.G.
Reactivity of Methoxy Species toward CO on Keggin 12-H3PW12O40: A Study with Solid State NMR
The Journal of Physical Chemistry C. 2009. V.113. N45. P.19639-19644. DOI: 10.1021/jp906888m WOS Scopus РИНЦ
Dates:
Submitted: Jul 21, 2009
Accepted: Oct 7, 2009
Published online: Oct 19, 2009
Published print: Nov 12, 2009
Identifiers:
Web of science WOS:000271428300042
Scopus 2-s2.0-70449562713
Elibrary 15308971
AN 2009:1284606
CAN 151:447861
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