用IR,NMR,HPLC研究煤超临界抽提油F2馏分

本文采用ＩＲ、ＮＭＲ、ＨＰＬＣ方法研究了我国峰峰矿瘦煤、焦煤、肥煤三种烟煤超临界抽出物Ｆ＿２馏分，这一馏分为抽出油已烷可溶物（ｏｉｌ）在硅胶色谱柱上用苯冲洗而得到￣［６］。由ＩＲ、ＮＭＲ、ＨＰＬＣ分析结果表明：三种烟煤Ｆ＿２馏分主要由芳烃化合物组成；以单取代苯和邻位双取代苯为主（包括缩合环体系）；芳环上取代基链不长，其中含有相当数量的申基取代的芳烃化合物，像甲苯、甲萘、二甲基萘等等。三种烟煤Ｆ＿２馏分中都含有较多的双环和三环芳烃，以三环芳烃含量最多。双环芳烃主要是萘系化合物；三环芳烃为蒽、菲类化合物；单环和三环以上芳烃含量较少。

STUDY OF F_2 FRACTION OF SUPERCRITICAL FXTRACTS BY IR. NMR. HPLC METHODS

The F_2 fraction of three Feng-feng bituminous coal (lean coal ,coking coal and fat coal) were examined by IR , NMR. and HPLC methods. Whish is the eluate of n-heptane-soluble oil from Supercritical coal extracts with benzene elution in silica-gcl chromatography column. The results of the analyses with IR. NMR and HPLC methods show that : F_2 fraction of three bituminous coal is mainly composed of aromatic hydrocarbons. In which single and ortho-double Substituted aromatic rings are dominant,Such as toluene , methyInaphthalene, dimethylnaphthalene etc,All the F_2 fractions of three bituminous coal contain quite a lot of double, and mostly three cyclic aromatics. The former are mainly naphthalene series compounds and the latter are mainly phenanthrene and anthracene etc. Single cyclic aromatics and that with more than three rings are less.