A COMPARATIVE-STUDY OF THE MICROPOROSITY OF THE AMMONIUM AND CESIUM SALTS OF 12-TUNGSTOPHOSPHORIC, 12-MOLYBDOPHOSPHORIC, AND 12-TUNGSTOSILICIC ACIDS BY XE-129 NMR

Authors
BONARDET JL FRAISSARD J MCGARVEY GB MOFFAT JB
Citation
Jl. Bonardet et al., A COMPARATIVE-STUDY OF THE MICROPOROSITY OF THE AMMONIUM AND CESIUM SALTS OF 12-TUNGSTOPHOSPHORIC, 12-MOLYBDOPHOSPHORIC, AND 12-TUNGSTOSILICIC ACIDS BY XE-129 NMR, Journal of catalysis, 151(1), 1995, pp. 147-154
Citations number
40
Categorie Soggetti
Chemistry Physical
Journal title
Journal of catalysis → ACNP
ISSN journal
00219517
Volume
151
Issue
1
Year of publication
1995
Pages
147 - 154
Database
ISI
SICI code
0021-9517(1995)151:1<147:ACOTMO>2.0.ZU;2-E
Abstract
The Xe-129 NMR method has been applied to the ammonium and cesium salt s of 12-tungstophosphoric, 12-molybdophosphoric, and 12-tungstosilicic acids, as well as to the potassium salt of the first acid. The data o btained provide evidence for the presence of a homogeneous and organiz ed pore structure. The ammonium salts produce similar pore openings of 9.0 Angstrom, regardless of the composition of the anion, while those for the cesium salts are found to be dependent on the nature of the a nion. (C) 1995 Academic Press, Inc.