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首页> 外文期刊>Journal of China University of Mining and Technology >Study of Constituents of Fractionated Extraction from Datong Coal
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Study of Constituents of Fractionated Extraction from Datong Coal

机译：大同煤分级提取成分研究。

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摘要

Datong coal was extracted with CS_2, n-hexane, benzene, methanol, acetone, tetrahydro-furan(THF) and THF/methanol(l:3,v/v) mixed solvent sequentially. The extracts were analyzed with GC/MS. It is presented that group seperation of soluble organic compounds in the coal can be achieved by fractionated extraction using different solvents. The results show that CS_2 was effective for extracting arenes from the coal sample. n-Hexane extractable fraction from Datong coal mainly consists of n-alkanes. A great variety of oxygen-containing compounds are dominant in the components of methanol-soluble fraction. Acyclic isoprenoids, pentecyclic triterpanes and a series of cyclohexanes with long-chain alkyl-substitutes are detected in acetone-soluble fraction. Dicyclic aramatic hydrocarbons are identified in benzene-soluble fraction and 4-6 cyclic condensed aramatic hydrocarbons are identified in THF-soluble fraction. The molecular structures detection of 1,2-dichlorobenzene, 2,4-dibromophnol, 2,4,6-tribromophenol and 4-chlorobenzophe-none firstly provide information for existence form of bromine and chlorine in coal.
机译：依次用CS_2，正己烷，苯，甲醇，丙酮，四氢呋喃（THF）和THF /甲醇（1：3，v / v）混合溶剂萃取大同煤。用GC / MS分析提取物。研究表明，可通过使用不同溶剂进行分馏来分离煤中的可溶性有机化合物。结果表明，CS_2对于从煤样中提取芳烃是有效的。大同煤的正己烷可萃取馏分主要由正构烷烃组成。在甲醇可溶级分的组分中，多种含氧化合物占主导。在丙酮可溶级分中检测到无环类异戊二烯，五环三萜和一系列带有长链烷基取代基的环己烷。在苯可溶级分中鉴定出二环芳族烃，在THF可溶级分中鉴定出4-6个环状稠合芳族烃。 1,2-二氯苯，2,4-二溴苯酚，2,4,6-三溴苯酚和4-氯苯甲酸的分子结构检测首先为煤中溴和氯的存在形式提供了信息。

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