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应用C、H核磁共振(NMR)对兖州北宿煤的液化产品油的性质进行系统分析。以C—NMR、H—NMR谱图上得到的13个结构参数,探索产品油性质与煤液化反应关系。得出随液化反应的进行,芳氢度、芳香度都有所下降,达到中质油水平;通过缩合指数、取代度以及各类碳的数据分析,可知每次循环反应产物的芳环数、芳环侧链长度以及液化过程中的主要反应。
The properties of liquefied product oil from North Jiangsu coal were systematically analyzed by C and H nuclear magnetic resonance (NMR). Thirteen structural parameters obtained from C-NMR and H-NMR spectra were used to explore the relationship between product oil properties and coal liquefaction. With the progress of liquefaction reaction, the degree of aromaticity and aromaticity decreased to reach the level of medium-quality oil. Through the analysis of the data of condensation index, degree of substitution and various types of carbon, it can be seen that the aromatic ring number of each reaction product, The length of aromatic ring side chain and the main reaction during liquefaction.