煤直接液化溶剂油的平均结构

对一种褐煤的直接液化加氢前、后溶剂油进行了1H核磁共振波谱、元素组成和分子量等性质的分析和平均结构参数的计算,研究了加氢前、后溶剂油分子的平均结构。结果显示:加氢处理前、后溶剂油的平均分子式为C17H23S0.004N0.09O0.12和C16H24S0.003N0.03O0.03,加氢前溶剂平均分子的芳碳率fa为0.46,平均分子结构含有2～3个环,其中芳香环为1～2个,环烷环为1个。经过加氢处理后溶剂油分子的平均结构发生较大的变化,溶剂平均分子芳碳率fa为0.37,平均分子结构中含有2个环,其中芳香环1个,环烷环1个,经加氢处理后,溶剂具备了较好的供氢性能。 The samples of a brown coal direct liquefaction prehydrotreated and hydrotreated solvent were examined by 1H-NMR,element analysis and molecular weights etc.,and their properties and the average structures were studied,and from which the average molecular formulas and relative structural parameters were obtained.The results show that the average molecular formulas of prehydrotreated and hydrotreated solvent are C17H23S0.004N0.09O0.12 and C16H24S0.003N0.03O0.03,and their aromatic-carbon ratio are 0.46 and 0.37,respectively.The average structure of the prehydrotreated solvent includes 2～3 rings,1～2 for aromatic rings and 1 for naphthenic ring.The average structure of the hydrotreated solvent was changed,it consists 2 rings,1 for aromatic and 1 for naphthenic ring.It was concluded that the hydrotreated solvent has well hydrogen-donating ability