煤中小分子化合物相对分子质量和密度的测定  

EXTRACTION OF SMALL MOLECULAR IN COAL AND MEASURING THEIR MOLECULAR WEIGHT AND DENSITY

作　　者：耿蒙蒙[1] 王迎春[2] 武瑞涛[3] 刘刚[1] 申峻[1] 凌开成[1] 

机构地区：[1]太原理工大学化学化工学院,太原硕士生030024 [2]太原科技大学化学与生物工程学院,太原讲师030021 [3]河北师范大学化学与材料科学学院,石家庄副教授050024

出　　处：《煤炭转化》2014年第3期24-26,32,共4页Coal Conversion

基　　金：国家自然科学基金资助项目(21076137);山西省回国留学人员基金资助项目(2012-037);山西省高校优秀青年学术带头人项目(TYAL2011)

摘　　要：利用有机溶剂对兖州煤中小分子化合物进行抽提,在抽提14h以上时抽提率基本不再变化,为12.26%左右.用凝胶色谱法对兖州煤中小分子化合物的相对分子质量进行测定,发现相对分子质量在几十到上万不等,但是主要集中在Mw=400左右.最后采用比重瓶法,利用混合液体密度公式测得小分子化合物密度为1.192 4g/cm3.Organic solvent was used to extract small molecular compounds of the Yanzhou coal,extraction rate basically no longer changed when approaching 12.26% after extraction of14 h.The molecular weight of small molecule compounds of Yanzhou coal was determined by gel permeation chromatography,the molecular weight ranging from dozens to tens of thousands,but mainly concentrated about M=400g/mol.Finally by pycnometer method,using the mixed liquid density formula method,small molecule compounds density was measured,that is 1.192 4g/cm3.

关 键 词：抽提率 凝胶色谱法 分子量 比重瓶法 密度 

分 类 号：TQ531[化学工程—煤化学工程]