CHARACTERIZATION OF ORGANIC MATERIAL IN COAL BY PROTON-DECOUPLED C-13 NUCLEAR MAGNETIC-RESONANCE WITH MAGIC-ANGLE SPINNING

被引：123

作者：

MACIEL, GE ^{[1
]}

BARTUSKA, VJ ^{[1
]}

MIKNIS, FP ^{[1
]}

机构：

[1] US DOE,LARAMIE TECHNOL CTR,LARAMIE,WY 82072

来源：

FUEL | 1979年 / 58卷 / 05期

关键词：

D O I：

10.1016/0016-2361(79)90159-5

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：

13C n.m.r. spectra have been obtained on ten solid coal samples of various types and on three coal-derived materials, using high-power proton decoupling, cross polarization and magic-angle spinning, and provide valuable information on the carbon distribution between aromatic and non-aromatic structures in the sample. Apparent carbon aromaticities, fa′, have been determined and have been correlated with H/C ratios and as one factor in fuel values. Both solvent refining and reverse combustion (see introduction) are found to increase the aromatic fraction. These techniques should be very useful in characterizing and optimizing coal-conversion processes. © 1979.

引用

页码：391 / 394

页数：4

共 13 条

[1]

Andrew E. R., 1971, PROGRESS NMR SPECTRO, V8, P1

[2]

[Anonymous], 1971, PULSE FOURIER TRANSF

[3] PROSPECTS FOR C-13 NUCLEAR MAGNETIC-RESONANCE ANALYSIS OF SOLID FOSSIL-FUEL MATERIALS [J].