C-13 SOLID-STATE NMR SPIN-LATTICE RELAXATION-TIME MEASUREMENTS OF COALS

被引：2

作者：

BARRIE, PJ ^{[1
]}

MADRALI, ES ^{[1
]}

KANDIYOTI, R ^{[1
]}

机构：

[1] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,DEPT CHEM ENGN,LONDON SW7 2BY,ENGLAND

来源：

ENERGY & FUELS | 1993年 / 7卷 / 04期

关键词：

D O I：

10.1021/ef00040a007

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Spin-lattice (T1) relaxation times of C-13 nuclei have been measured on eight different coals in order to determine the best experimental conditions for recording C-13 single-pulse-excitation NMR spectra. It is found that a recycle delay of approximately 100 s is necessary to obtain quantitatively reliable spectra of coals using single-pulse-excitation methods.

引用

页码：479 / 481

页数：3

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