Reactivity of Methoxy Species toward CO on Keggin 12-H3PW12O40: A Study with Solid State NMR Full article
Journal |
The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455 |
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Output data | Year: 2009, Volume: 113, Number: 45, Pages: 19639-19644 Pages count : 6 DOI: 10.1021/jp906888m | ||||||
Tags | INELASTIC NEUTRON-SCATTERING; VAPOR-PHASE CARBONYLATION; DIMETHYL ETHER; MAS-NMR; SELECTIVE CARBONYLATION; ALCOHOL DEHYDRATION; H-ZSM-5 ZEOLITE; CHEMICAL-SHIFTS; CARBENIUM IONS; C-13 CP/MAS | ||||||
Authors |
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Affiliations |
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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
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 |
Chemical Abstracts | 2009:1284606 |
Chemical Abstracts (print) | 151:447861 |
OpenAlex | W2023854813 |