Surface methoxy groups in zeolites studied by multinuclear MAS nmr spectroscopy

被引：31

作者：

Bosacek, V ^{[1
]}

Ernst, H ^{[1
]}

Freude, D ^{[1
]}

Mildner, T ^{[1
]}

机构：

[1] UNIV LEIPZIG,ABT GERNZFLACHENPHYS,D-7010 LEIPZIG,GERMANY

来源：

ZEOLITES | 1997年 / 18卷 / 2-3期

关键词：

chemisorbed methylium ions; zeolites; lattice oxygen; basicity; surface methoxy groups; H-1 MAS nmr; C-13 CP MAS nmr;

D O I：

10.1016/S0144-2449(96)00145-5

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：

Solid-state n.m.r, spectroscopy of H-1 and C-13 nuclei has been applied in order to study chemisorbed methyl species on zeolites with different intermediate electronegativity of the framework. The secondary influence of the framework via the carbon atoms, which is expressed in the H-1 MAS n.m.r. spectra, gives a similar measure of the basicity of the zeolite as the C-13 MAS n.m.r. of methoxy groups. The basicity of the zeolite determines the reactivity of the surface methoxy groups. (C) Elsevier Science Inc. 1997.

引用

页码：196 / 199

页数：4

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