HIGH-FIELD NMR-STUDIES OF ARGONNE PREMIUM COALS

被引：0

作者：

HU, JZ ^{[1
]}

LI, LY ^{[1
]}

YE, CH ^{[1
]}

机构：

[1] ACAD SINICA,WUHAN INST PHYS,MAGNET RESONANCE & ATOM & MOLEC PHYS LAB,WUHAN 430071,PEOPLES R CHINA

来源：

ADVANCES IN CHEMISTRY SERIES | 1993年 / 229期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Seven Argonne Premium coals were studied by cross-polarization (CP)-combined rotation and multiple-pulse spectroscopy (CRAMPS) in a 9.4-T magnetic field The apparent carbon aromaticities of the coals obtained at high field via static CP spectra agreed well with those measured at low field, that is, 2.3 T. A detailed discussion of the spectral distortion in the total suppression of sidebands (TOSS) experiment at low spinning rates is given. The experimental evidence presented in this chapter shows that static CP measurements are promising for coal studies.

引用

页码：311 / 322

页数：12

共 18 条

[1]

BOTTO RE, 1988, PREPR PAP AM CHEM SO, V33, P50

[2] PROTON NMR-STUDY OF DEHYDRATION OF THE SILICA-GEL SURFACE [J].

BRONNIMANN, CE ;

ZEIGLER, RC ;

MACIEL, GE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1988, 110 (07) :2023-2026

[3] HIGH-SPEED MAGIC-ANGLE SPINNING [J].

DEC, SF ;

WIND, RA ;

MACIEL, GE ;

ANTHONIO, FE .

JOURNAL OF MAGNETIC RESONANCE, 1986, 70 (02) :355-359

[4] SPINNING-SIDEBAND-FREE AND SPINNING-SIDEBAND-ONLY NMR-SPECTRA IN SPINNING SAMPLES [J].

DIXON, WT .

JOURNAL OF CHEMICAL PHYSICS, 1982, 77 (04) :1800-1809

[5]

Gerstein B.C., 1985, TRANSIENT TECHNIQUES

[6] UTILITY OF PULSE NUCLEAR MAGNETIC-RESONANCE IN STUDYING PROTONS IN COALS [J].

GERSTEIN, BC ;

CHOW, C ;

PEMBLETON, RG ;

WILSON, RC .

JOURNAL OF PHYSICAL CHEMISTRY, 1977, 81 (06) :565-570

[7] SIGNAL-TO-NOISE RATIO OF NUCLEAR MAGNETIC-RESONANCE EXPERIMENT [J].

HOULT, DI ;

RICHARDS, RE .

JOURNAL OF MAGNETIC RESONANCE, 1976, 24 (01) :71-85

[8] NMR IN ROTATING SOLIDS [J].

MARICQ, MM ;

WAUGH, JS .

JOURNAL OF CHEMICAL PHYSICS, 1979, 70 (07) :3300-3316

[9] MULTIPLE PULSE NMR IN ROTATING SOLIDS [J].

OLEJNICZAK, ET ;

VEGA, S ;

GRIFFIN, RG .

JOURNAL OF CHEMICAL PHYSICS, 1984, 81 (11) :4804-4817

[10] MULTIPLE-PULSE NMR IN INHOMOGENEOUSLY BROADENED ROTATING SOLIDS - THEORY OF SIDEBAND SUPPRESSION EXPERIMENTS [J].

RALEIGH, DP ;

OLEJNICZAK, ET ;

GRIFFIN, RG .

JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (03) :1333-1350

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