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Direct 2H NMR Observation of the Proton Mobility of the Acidic Sites of Anhydrous 12-Tungstophosphoric Acid Full article

Common Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal ChemPhysChem
ISSN: 1439-4235 , E-ISSN: 1439-7641
Output data Year: 2013, Volume: 14, Number: 9, Pages: 1783-1786 Pages count : 4 DOI: 10.1002/cphc.201300291
Tags heterogeneous catalysis, NMR spectroscopy, proton mobility, solid heteropolyacids, solid state
Authors Kolokolov Daniil I. 1 , Kazantsev Maxim S. 1 , Luzgin Mikhail V. 1 , Jobic Herve 2 , Stepanov Alexander G. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS
2 Institute of Researches on Catalysis and Environment in Lyon

Funding (1)

1 Russian Foundation for Basic Research 12-03-31108

Abstract: The proton dynamics of solid 12-tungstophosphoric acid (TPA) is probed by solid-state 2H NMR in a temperature range from 293–503 K. Protons of TPA are shown to be involved in two types of molecular motion (see picture): the anisotropic local two-site flipping between the two possible orientations of the O[BOND]H bond at bridged oxygens of the Keggin anion, and the isotropic diffusion by hopping between neighboring surface oxygens of the anion.
Cite: Kolokolov D.I. , Kazantsev M.S. , Luzgin M.V. , Jobic H. , Stepanov A.G.
Direct 2H NMR Observation of the Proton Mobility of the Acidic Sites of Anhydrous 12-Tungstophosphoric Acid
ChemPhysChem. 2013. V.14. N9. P.1783-1786. DOI: 10.1002/cphc.201300291 WOS Scopus РИНЦ
Dates:
Submitted: Mar 25, 2013
Published online: Apr 16, 2013
Published print: Jun 24, 2013
Identifiers:
Web of science WOS:000320383300004
Scopus 2-s2.0-84879173749
Elibrary 20440146
AN 2013:592003
CAN 159:207316
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