SOLID-STATE H-1-NMR STUDIES OF THE ACIDITY OF MORDENITES

被引：20

作者：

HEERIBOUT, L

SEMMER, V

BATAMACK, P

DOREMIEUXMORIN, C

FRAISSARD, J

ANTOS, G

机构：

[1] UNIV PARIS 06,CNRS,URA 1428,F-75252 PARIS 05,FRANCE

[2] UOP,DES PLAINES,IL 60017

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1995年 / 91卷 / 21期

关键词：

D O I：

10.1039/ft9959103933

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 interaction of known numbers of water molecules with the acidic OH groups of H-form commercial mordenites, giving H3O+ and H2O ... HO, is studied using H-1 broad-line NMR at 4 K and MAS NMR at 300 K. The H3O+ concentration for one adsorbed water molecule per Bronsted-acid site is related to the Si/Al ratio. The differences between the H3O+ concentrations for the two samples at a higher water concentration is associated, semi-quantitatively, with synergy between Bronsted- and Lewis-acid sites.

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收藏

页码：3933 / 3939

页数：7

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