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

被引：27
作者：
BONARDET, JL
FRAISSARD, J
MCGARVEY, GB
MOFFAT, JB
机构：
[1] UNIV WATERLOO, DEPT CHEM, WATERLOO, ON N2L 3G1, CANADA
[2] UNIV WATERLOO, GUELPH WATERLOO CTR GRAD WORK CHEM, WATERLOO, ON N2L 3G1, CANADA
来源：
JOURNAL OF CATALYSIS | 1995年 / 151卷 / 01期
关键词：
D O I：
10.1006/jcat.1995.1017
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The Xe-129 NMR method has been applied to the ammonium and cesium salts of 12-tungstophosphoric, 12-molybdophosphoric, and 12-tungstosilicic acids, as well as to the potassium salt of the first acid. The data obtained provide evidence for the presence of a homogeneous and organized 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 anion. (C) 1995 Academic Press, Inc.
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页码：147 / 154
页数：8
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