APPLICATION OF DEFT AND SEFT FOR SIGNAL-TO-NOISE RATIO ENHANCEMENT AND T(2)-SELECTIVE SPECTRA IN SI-29 MAS NMR OF ZEOLITES

被引：6

作者：

ANDERSON, MW

机构：

[1] Department of Chemistry, UMIST, Manchester, M60 1QD, P.O. Box

来源：

MAGNETIC RESONANCE IN CHEMISTRY | 1992年 / 30卷 / 09期

关键词：

SOLID-STATE NMR; ZEOLITE SI-29; MAS NMR; T(2) RELAXATION;

D O I：

10.1002/mrc.1260300919

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Driven equilibrium and spin-echo Fourier transform spectroscopy (DEFT and SEFT) were used to observe Si-29 high-resolution solid-state nuclear magnetic resonance with magic-angle spinning (MAS NMR) spectra of zeolites. The sequences allow the measurement of T2 relaxation times, dramatic improvements in signal-to-noise ratios and selective observation of signals with long T2 relaxation times. This last criterion permits the simplification of Si-29 spectra of highly aluminous zeolites, yielding important crystallographic information.

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页码：898 / 904

页数：7

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