O-17 MAS NMR study of 12-molybdophosphoric acid

被引：13

作者：

Kozhevnikov, IV ^{[1
]}

Sinnema, A ^{[1
]}

vanBekkum, H ^{[1
]}

Fournier, M ^{[1
]}

机构：

[1] UNIV SCI & TECH LILLE FLANDRES ARTOIS,CATALYSE HETEROGENE & HOMOGENE LAB,URA 402,F-59655 VILLENEUVE DASCQ,FRANCE

来源：

CATALYSIS LETTERS | 1996年 / 41卷 / 3-4期

关键词：

heteropoly acid; H(3)PM(012)O(40); O-17 MAS NMR; oxygen exchange;

D O I：

10.1007/BF00811483

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：

O-17 MAS NMR spectra for O-17 enriched solid heteropoly acid H3PMo12O40 are reported. The oxygen exchange between solid (H3PMo12O40)-O-17 and (H2O)-O-16 vapor at 200-250 degrees is shown to be accompanied by fast mixing of terminal Mo=O and bridging Mo-O-Mo oxygens in the Keggin unit. The oxygen exchange in (H3PMo12O40)-O-17 is much faster than in (H3PW12O40)-O-17 in solution as well as in the gas phase.

引用

页码：153 / 157

页数：5

共 30 条

[1] 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 [J].