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在用各种近代化学和近代物理方法对煤的分子结构进行一般定性描述的基础上,为进一步研究煤的各类分子结构的性质和特征,使复杂的分子结构能有规律地归纳和分组,就要通过有选择的化学反应以便对各类煤分子的应变态势和特征进行剖析。为此采用较低温度(低于热解温度)下对煤进行增溶溶解处理和系统分级,然后进行结构分析。在增溶溶解处理时,可以采用不同的操作温度(215～320℃)检测含氧官能团及其分布、排列,比较芳香结构的键合及其侧链,并可根据化学结构
Based on the general qualitative description of molecular structure of coal with various modern chemistry and modern physical methods, in order to further study the properties and characteristics of various molecular structures of coal, complex molecular structures can be regularly summarized and grouped, It is necessary to adopt selective chemical reactions in order to analyze the strain situation and characteristics of various types of coal molecules. To this end, the coal is solubilized, dissolved and treated at a relatively low temperature (below the pyrolysis temperature) and the system is graded, followed by structural analysis. In the solubilization and dissolution treatment, the oxygen-containing functional groups and their distributions can be detected at different operating temperatures (215-320 ° C), the bonding of the aromatic structure and its side chains can be aligned, and the chemical structure