| Study of Constituents of Fractionated Extraction from Datong Coal |
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| 作者姓名： | WANG Xiao-hua WEI Xian-yong |
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| 作者单位： | [1]Department of Chemistry and Chemical Engineering, Xi＇an University of Science and Technology, Xi＇an, Shaanxi 710054, China [2]School of Chemical Engineering and Technology, China University of Mining ＆ Technology, Xuzhou, Jiangsu 221008, China |
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| 基金项目： | Projects 20076051, G 1999022101, and 98029016 supported by National Natural Science Foundation of China, the Special Found for Major State Basic Research Project, and Research Found for the Doctoral Program of Higher Education |
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| 摘 要： | Datong coal was extracted with CS2, n-hexane, benzene, methanol, acetone, tetrahydro-furan（THF） and THF/methanol（1：3,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 CS2 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-chlorobenzophenone firstly provide information for existence form of bromine and chlorine in coal.
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| 关 键 词： | 煤化学 山西 大同市 分馏工艺 化学成分 可溶解性 |
| 收稿时间： | 2005-04-10 |
| 修稿时间： | 2005-07-25 |
Study of Constituents of Fractionated Extraction from Datong Coal |
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| WANG Xiao-hua WEI Xian-yong.Study of Constituents of Fractionated Extraction from Datong Coal[J].Journal of China University of Mining and Technology,2005,15(4):299-304. |
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| Authors: | WANG Xiao-hua WEI Xian-yong |
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| Affiliation: | 1. Department of Chemistry and Chemical Engineering,Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China
2. School of Chemical Engineering and Technology,China University of Mining & Technology,Xuzhou,Jiangsu 221008,China |
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| Abstract: | Datong coal was extracted with CS2, H-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 CS2 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. |
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| Keywords: | coal solvent fractionated extraction chemical constituent GC/MS |
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