Studies on Chemical Structure of Coal and on the Initial Reaction of Coalification

结果表明，脂肪酸酯和羟基烷基芳烃是煤结构的重要基本组分。他们生产了正石蜡和烷基芳烃。在轻度氢化过程中。对温和加氢产物的正己烷萃取渣进行再加氢和正己烷萃取。对其残渣进行加氢和萃取。然后将这三种正己烷提取物分为酸、碱、饱和、芳香、可蒸馏极性中性和不可蒸馏极性中性。对各对应分数进行分析比较。除后加氢产物中较重的组分增加和较短的烷烃增加外，所有相应馏分的组分基本相似。得出了煤中脂肪酸和羟基芳烃的组成及其结构均相的结论。通过苯酚与C_<18>脂肪酸的反应模型，证实了木质素与脂质反应生成烷基酚的假设。该反应产生烷基酚。烷基四萘、烷基萘、烷基菲等。木质素还与C_<14>醇反应生成烷基酚。

It was proved that fatty acid esters and hydroxylated alkyl aromatics are the important basic constituents of coal structure. They produced n-paraffines and alkyl aromatics. during mild hydrogenation. The n-hexane extraction residue of mild hydrogenation product was again hydrogenated and extracted by n-hexane. Its residue was repeated by hydrogenation and extraction. Those three n-hexane extracts were then fractionated to acid, base, saturate, aromatic, distillable polar neutral and undistillable polar neutral. Eich corresponding fractions were analyzed and compared. All the corresponding fractions have the similar components except the increase of heavier components in the latter hydrogenation product and the increase of shorter paraffins. The conclusion was drawn that coal composes of fatty acid and hydroxylated aromatics and its structure in homogeneous. The hypothesis that alkyl phenol was produced from the reaction between lignin and lipid was proved by the model reaction between phenol and C_<18> fatty acid. The reaction produced alkyl phenol. alkyl tetralin alkyl naphthaleng, alkyl phenanthrene etc. Lignin also produced alkyl phenols by the reaction with C_<14> alcohol.