煤液化油的梯度洗脱及芳烃组成分析

Gradient Elution of Coal Liquefaction Oil and Analysis of Aromatics Constitutes

摘要: 采用梯度洗脱技术对煤液化油进行了分离，并对芳烃部分进行了气相色谱质谱(GCMS)和核磁共振氢谱（1HNMR）分析。结果表明，通过梯度洗脱技术能够将煤液化油分成轻、中和重芳烃。单环芳烃低场部分质子的特征吸收区域在化学位移（δ）为6.9~7.2处，双环和多环芳烃低场部分质子特征吸收区域在δ为7.2~9.0处。

Abstract: The coal liquefaction oil was separated using gradient elution method and the aromatics were analyzed by gas chromatography and mass spectrometry (GCMS) and 1Hnuclear magnetic resonance (1HNMR). The results show that the aromatics are separated into light, middle and heavyaromatics by the method. The chemical shifts of the proton of aromatics in the low field NMR are at 6.9—7.2 for monoaromatics as well as 7.2—9.0 for multiaromatics.