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对云南潦浒、寻甸、吉林舒兰褐煤树脂中结合酸进行了GC -MS分析 ,对其化学组成及结构特征进行了对比研究 .结果显示 ,树脂结合酸均以正构烷酸为主要成分 ,其分布为C12 ～C2 8,高含量的正构烷酸集中在低碳数一端 .在潦浒、寻甸树脂结合酸中 ,C2 0 含量最高 ,其次为C16,而在舒兰结合酸中 ,正构烷酸占绝对优势 ,且C16为最高含量的化合物 ;去氢松香酸在每个样品中含量均较低 ,其它三环二萜酸 ,如松脂酸、三达松脂酸等异构体或立体异构体含量也非常低 ;具有五环三萜骨架的酸性物质 ,在潦浒、舒兰结合酸中比较丰富 ,其含量超过寻甸结合酸 ;在低碳数一端 ,存在着各种支链烷酸及苯甲酸、苯酚及取代物 .对比树脂烃、树脂游离酸的结果 ,潦浒树脂结合酸与寻甸树脂结合酸无论从组成和分布上都是极其相似的 ,故其原料煤成煤植物和成煤环境具有相似性 ,与舒兰煤之生源和环境存在着本质的差异 .
GC-MS analysis of the combined acids in Lulou, Xundian and Jilin Shulan lignocellulosics in Yunnan Province was carried out, and their chemical compositions and structural characteristics were compared. The results showed that the resin-bound acids were mainly composed of n-alkanoic acids , The distribution of C12 ~ C2 8, high concentrations of n-alkanoic acid concentrated in the low-carbon end.Li Xun, Xundian resin acid, C2 0 highest content, followed by C16, and Shulan combination of acid , N-alkanoic acid accounted for the absolute predominance, and C16 was the highest content of compounds; dehydroabietic acid content in each sample were lower, other tricyclic diterpene acid, such as rosin acid, Body or stereoisomer content is also very low; acid with pentacyclic triterpenoid skeleton in the lush, Shulan combined acid rich, its content than Xundian combined acid; at the low carbon end, there is All kinds of branched alkanoic acids and benzoic acid, phenol and substitutes.Compared with the results of resin and free acid, the combination of acid and Xindian resin are very similar in composition and distribution Raw coal into a coal plant and coal environment have similarities, and Shulan The students and the environment there are differences in the nature.