神府煤萃取物组成结构的特征分析  

Compositional and structural features of the extracts from Shenfu coal

作　　者：姚子硕[1] 魏贤勇[1,2] 黄耀国[1] 宗志敏[1] 黄勇[1] 许晶晶[1] 李艳[1] 路瑶[1] 吕洁[1] 芦海云[1] 

机构地区：[1]中国矿业大学煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221008 [2]武汉科技大学煤转化与新型炭材料湖北省重点实验室,湖北武汉430081

出　　处：《武汉科技大学学报》2009年第6期631-637,共7页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金委员会创新研究群体科学基金资助项目(5092100);国家"973"计划资助项目(2004CB217601);国家自然科学基金西部能源重大研究计划重点资助项目(90410018);国家自然科学基金资助项目(20676142;20936007);江苏省普通高校高新技术产业发展重点资助项目(JHB05-33)

摘　　要：采用苯、甲醇、丙酮、等体积的CS2与丙酮的混合溶剂和四氢呋喃依次萃取神府煤,得到其萃取物E1E5,并采用钌离子催化氧化法氧化各级萃取物,所得氧化产物经重氮甲烷酯化后再进行GC/MS分析,以产物组成结构的差异来推测各级萃取物组成结构的差异。结果表明,神府煤萃取物所得酯化产物的主要成分是烷酸甲酯和烷二酸二甲酯,推测其萃取物中含有大量的烷基芳烃和α,ω-二芳基烷烃;且随着溶剂极性的增强,其萃取物氧化后的酯化产物中,烷酸甲酯和烷二酸二甲酯的碳链长度呈一定的递增趋势,推测神府煤中长链烷基芳烃和α,ω-二芳基烷烃易溶于极性较强的溶剂;在氧化产物中还检测出19种甾烷酸甲酯、萜烷酸甲酯和霍烷酸甲酯,表明神府煤萃取物中含有与芳环相连的甾烷基、萜烷基和霍烷基结构。Shenfu coal was sequentially extracted with benzene,methanol,acetone,acetone/CS2 and THF,and each extract was subject to ruthenium ion-catalyzed oxidation.After being esterified with diazomethane,the products were analyzed with GC/MS.The differences in composition and structure between the extracts are inferred by comparing the differences between the products.The results show that the main components in the products from Shenfu coal extracts are methyl alkanoates and dimethyl alkanedioates,implying that Shenfu coal extracts contain large amount of alkylarenes and α,ω-diarylalkanes;carbon number of the methyl alkanoates and dimethyl alkanedioates increases with increasing solvent polarity,suggesting the long-chain alkylarenes and α,ω-diarylalkanes in Shenfu coal are soluble in solvents with stronger polarity;19 kinds of methyl steranoates,methyl terpanoates and methyl hopanoates were detected,indicating that the extracts contain steryl,terpyl and hopylaromatic moieties.

关 键 词：钌离子催化氧化 神府煤 GC/MS 分级萃取 

分 类 号：TQ533.2[化学工程—煤化学工程]