【摘要】 在CCl₄夹带剂作用下CO₂超临界萃取枣庄煤,为煤超临界萃取产物的利用提供了的理论依据,同时对煤的成煤环境进行分析。萃取物中共检测出48种有机化合物。其中包括7种芳烃类（占35.382%）、9种酯类（占36.148%）、19种烷烃类（占14.410%）、1种酸酐类（占0.376%）、1种脂肪酸类（占2.199%）、1种烯烃类（占0.382%）、1种酮类（占1.953%）和9种其他物质（占9.151%）。其中卤代烃（占3.007%）,检测出一种环八硫（占1.397%）。检测出的正烷烃具有偶碳优势,从而可推测成煤环境多出现在碳酸盐岩和蒸发岩系中,盐湖或高含盐地层中。检测到生物标志物:2,6,10,14-四甲基十六烷（植烷）占1.028%。扫描电镜观察萃取前后的煤表面形貌变化,比表面测试表明萃余煤的比表面积和孔径分布变大,XRD显示出θ为29.5°时有机峰减弱至不明显。更多还原

【Abstract】 The theoretical basis for the utilization of the supercritical extraction of coal were provided by CO₂ supercritical extraction of Zaozhuang coal under the action of carbon tetrachloride,and the coal forming environment were analyzed. 48 kinds of organic compounds were detected in extract including 7 kinds of aromatic（35. 382%）,9 kinds of esters（36. 148%）,19 kinds of alkanes（14. 410%）,one type of acid anhydride（0. 376%）,one species of fatty acids（2. 199%）,a kinds of alkenes（0. 382%）,a sort of ketones（1. 953%） and 9 kinds of some others（9. 151%）. Other substances were mainly for halogenated hydrocarbons（3. 007%）,a ring of eight sulfurs was detected（1. 397%）. N-alkanes detected are advantage of even carbon,so that the coal forming environment mostly occurs in carbonate and evaporite rocks series and in Saline Lake or high salt formation. 2,6,10,14-tetramethyl-hexadecane（phytane） is detected that a kind of biomarkers（1. 028%）. Surface morphology of coal before and after extraction was observed by scanning electron microscope. The surface aperture test shows that the specific surface area and pore size distribution of the coal residue become larger. XRD shows that peaks of organic are weakened to not obvious when θ is 29. 5°.更多还原