XE-129 NMR INVESTIGATION OF COAL MICROPORES

被引：34
|
作者：
TSIAO, C [1 ]
BOTTO, RE [1 ]
机构：
[1] ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439
来源：
ENERGY & FUELS | 1991年 / 5卷 / 01期
关键词：
D O I：
10.1021/ef00025a015
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：
The microporous structures of three Argonne Premium coals, and a weathered sample and three oxidized samples of Illinois No. 6 coal (APCS No. 3), have been investigated by Xe-129 NMR spectroscopy. An analytical model has been developed which approximates the average pore sizes and pore swelling characteristics for the coals according to changes in Xe-129 chemical shifts as a function of xenon pressure. Pore regions can be described which differ in size (approximately 6 and approximately 10 angstrom in diameter) or chemical composition. The effects of weathering and oxidation at elevated temperatures on the pore size and swelling of Illinois No. 6 coal have also been examined.
引用
收藏
页码：87 / 92
页数：6
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