Effect of TCNE addition on the extraction of coals and solubility of coal extracts
Effect of TCNE addition on the extraction of coals and solubility of coal extracts
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DOI：
10.1021/ef00042a058
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发表时间：
1993-11
期刊：
影响因子：
5.3
通讯作者：
H. T. Liu;T. Ishizuka;T. Takanohashi;M. Iino
中科院分区：
文献类型：
--
作者：
H. T. Liu;T. Ishizuka;T. Takanohashi;M. Iino
研究了TCNE对二硫化碳-N-甲基-2-吡咯烷酮（CS2-NMP）混合溶剂（体积比1：1）萃取不同煤阶煤的影响。TCNE显著提高了某些煤的萃取率。TCNE似乎对具有大量重抽出物馏分的煤有效，即，吡啶不溶性提取物级分（E-PI）。添加TCNE对E-PI和其它较轻萃取物级分的溶解度的影响，以及通过TCNE对增溶级分级分的表征，表明上述通过TCNE的萃取产率提高可能归因于抑制煤分子之间的缔合
The effect of TCNE addition on the extraction of coals of different rank with carbon disulfide-N-methyl-2-pyrrolidinone (CS 2 -NMP) mixed solvent (1:1 by volume) was investigated. TCNE increases considerably the extraction yields for some coals among the coals examined. TCNE seems to be effective for the coals that have much of heavy extract fraction, i.e., pyridine-insoluble extract fraction (E-PI). The effect of TCNE addition on the solubility of E-PI and other lighter extract fractions, and characterization of the solubilized fraction fractions by TCNE, suggest that the extraction yield enhancement by TCNE described above may be attributed to the suppression of association between coal molecules