Direct 2H NMR Observation of the Proton Mobility of the Acidic Sites of Anhydrous 12-Tungstophosphoric Acid | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

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 Siberian Branch of the Russian Academy of Sciences Prospekt Akademika Lavrentieva 5, Novosibirsk 630090 (Russia)
2	Institut de Recherches sur la Catalyse et l’Environnement de Lyon Universit de Lyon 1, CNRS 2. Av. A. Einstein, 69626 Villeurbanne (France)

Funding (1)

Russian Foundation for Basic Research

12-03-31108

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.

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 ANCAN PMID OpenAlex

Submitted:	Mar 25, 2013
Published online:	Apr 16, 2013
Published print:	Jun 24, 2013

Web of science:	WOS:000320383300004
Scopus:	2-s2.0-84879173749
Elibrary:	20440146
Chemical Abstracts:	2013:592003
Chemical Abstracts (print):	159:207316
PMID:	23592413
OpenAlex:	W2169802737

DB	Citing
Web of science	16
Scopus	16
Elibrary	16
OpenAlex	17