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

事实证明，脂肪酸酯和羟基烷基芳烃是煤结构的重要基本组成。他们生产正构烷烃和烷基芳烃。在温和的氢化过程中。对温和加氢产物的正己烷抽提渣油进行二次加氢，并用正己烷萃取。它的残留物通过加氢和提取重复进行。然后将这三种正己烷提取物分成酸、碱、饱和、芳香、可蒸馏的极性中性和不可蒸馏的极性中性。对相应的组份进行了分析和比较。除后一种加氢产物中较重的组分增加和短链烷烃增加外，所有相应馏分的组成都很相似。结果表明，煤由脂肪酸和羟基芳烃组成，结构均一。通过苯酚与C&lt；18&gt；脂肪酸的模型反应，验证了木质素与脂肪反应生成烷基酚的假说。该反应生成烷基苯酚。烷基四氢萘、烷基萘、烷基菲等也可与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.