煤中小分子物质对煤结构性质影响的研究

Study on effect of small molecules in coal on structure and property of coal

探讨了煤中小分子物质对煤表面结构、平均孔径、官能团结构的影响。通过实验现象分析可知,它们都不同程度地受到了影响,当抽出小分子物质后,煤的表面孔结构变得疏松多孔,小块单元增多,大块单元减少,平均孔径增大,几乎达到原来的10倍,脂肪烃、环烷烃及醇醚酚类官能团减少,但煤结构单元的主要芳环并未减少,即煤大分子结构框架没有发生根本性的变化。

This paper focuses on the influence of small molecules of coal on the surface structure of coal,the average pore size,functional group structure.Through experimental results analysis,they have been affected to varying degrees.When small molecule compounds are extracted,the surface pore structure of coal becomes porous,with increased small unit and reduced chunk unit.And the average pore size is increased to almost 10 times the original.Aliphatic hydrocarbons,naphthenic and ether phenolic functional groups decreased,but the core of coal structural unit aromatic ring has not been reduced.The coal macromolecular structure did not change the fundamental framework.