煤中小分子化合物相对分子质量和密度的测定实验  

Measurement Experiment of Coal Small Molecule Compounds′ Relative Molecular Mass and Density

作　　者：任庆云[1] 王松涛[1] 

机构地区：[1]集宁师范学院,内蒙古乌兰察布012000

出　　处：《煤炭技术》2016年第7期290-292,共3页Coal Technology

摘　　要：使用有机溶剂可以抽提煤中的小分子化合物。抽提过程中,抽提率稳定在12.34%时间点为抽提14 h以上。小分子化合物的相对分子质量分布范围很广,比重瓶法测密度可以保证测量的可靠稳定性,实验使用该方法测得煤中小分子化合物密度为1.897 g/cm^3。Coal small molecule compounds may be extracted by using organic solvents. During extraction process, the extraction rate remained is stable at 12.34% more than 14 hours. Relative molecular mass distribution of small molecules is very wide. Pycnometer method to measure the density can guarantee reliable stability of the measurement. In this experiment the method is used to measure the coal density of small molecule compounds, and the result is 1.897 g/cm^3.

关 键 词：抽提率 相对分子质量 比重瓶法 

分 类 号：TQ531[化学工程—煤化学工程] O652[理学—分析化学]