A STUDY BY P-31 NMR SPIN-ECHO MAPPING OF VPO CATALYSTS .1. CHARACTERIZATION OF THE REFERENCE PHASES

被引：72
作者：
SANANES, MT
TUEL, A
VOLTA, JC
机构：
[1] Institut de Recherches sur la Catalyse, CNRS, Villeurbanne 69626 Villeurbanne
来源：
JOURNAL OF CATALYSIS | 1994年 / 145卷 / 02期
关键词：
D O I：
10.1006/jcat.1994.1032
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：
Spectra of 31P NMR by spin echo mapping of the pure VPO phases and the corresponding precursors are presented. They show that it is possible to distinguish phases in the V4+ and V5+ oxidation states, as has been previously published. In addition, the technique can characterize a V3+ phase. Evidence of dispersed V5+ on the VPO matrix is presented. © 1994 Academic Press, Inc.
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页码：251 / 255
页数：5
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