An evidence for the strong association of N-methyl-2-pyrrolidinone with some organic species in three Chinese bituminous coals

作     者：LIU ChanMin ZONG ZhiMin JIA JiXian LIU GuangFeng WEI XianYong 

作者机构：School of Chemical Engineering China University of Mining and Technology Xuzhou 221008 China School of Life Sciences Xuzhou Normal University Xuzhou 221116 China Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province Wuhan University of Science and Technology Wuhan 430081. China 

出 版 物：《Chinese Science Bulletin》 (Chin. Sci. Bull.)

年 卷 期：2008年第53卷第8期

页      面：1157-1164页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：the National Natural Science Foundation of China (Grant Nos. 90410018, 90510008 and 10432060) the Key Project of Chinese Ministry of Educa-tion (Grant No. 104031) the Program of the Universities in Jiangsu Province for Development of High-Tech Industries (Grant No. JHB05-33) 

主　　题：N-甲基-2-吡咯烷基 烟煤 GC/MS分析 相互作用 

摘      要：Three Chinese bituminous coals collected from Shenfu, Heidaigou and Feicheng coal fields were re- spectively extracted with carbon-disulfide/N-methyl-2-pyrrolidinone (CS2/NMP) mixed solvent (volume ratio 1:1) at room temperature followed by distillation of CS2 under ambient pressure and subsequent removal of most of NMP by distillation at 110℃ under reduced pressure to afford mixed sol- vent-extractable fractions (MSEFs) with small amount of NMP. Acetone-extractable fraction 1 (AEF1) was obtained by extracting each MSEF under ultrasonic irradiation at room temperature and subse- quently using a Soxhlet extractor. Direct extraction of each bituminous coal affords acetone-soluble fraction 2 (AEF2). GC/MS analysis shows that m/z of base or secondary peak in mass spectra of a se- ries of components from each AEF1 is 98, whereas such components were not detected in AEF2. Since m/z of base peak in mass spectrum of NMP itself is 99, the base or secondary peak at m/z 98 should result from loss of α-H from NMP, i.e., NMP is strongly associated with some organic species (OSs) and thereby the components detected with base or secodary peak at m/z 98 in their mass spectra should be associated NMP-OS.