【作者】 张海永；

【导师】 王永刚； 许德平；

【作者基本信息】 中国矿业大学（北京） ， 化学工艺， 2013， 博士

【摘要】 低温煤焦油通过加氢处理可以制备出富含环烷烃和氢化芳烃的高性能喷气燃料组分,实现煤焦油原料的清洁高效转化。通过改变金属负载量、氧化铝的水热处理温度和载体中Y分子筛的添加量制备出不同的NiW加氢处理催化剂,采用低温N2吸附、H2-TPR、XRD、SEM、NH3-TPD等手段进行表征,考察了金属配比、孔结构及载体酸性对催化剂结构、活性金属分散性及还原性的影响,并通过萘-甲酚模型化合物的加氢反应对其活性进行评价,研究了萘和甲酚在不同催化剂上的加氢反应路径及催化机理。以优选的催化剂对低温煤焦油馏分进行加氢处理,考察了加氢处理催化剂对芳烃和酚类化合物定向转化为环烷烃和氢化芳烃的效果。结果表明,制备的催化剂显著提高了焦油馏分中环烷烃和氢化芳烃的含量,添加5%Y型分子筛之后效果更为明显。更多还原

【Abstract】 Low-temperature coal tar can be converted clean and efficiently by hydroprocessing to obtain high-performance aviation jet fuel components rich in cycloalkanes and hydroaromatics. NiW catalysts were prepared with different metal loading, with gamma-alumina hydrothermal treated at different temperatures and with different zeolite Y addition, and characterized with N2adsorption, H2-TPR, XRD, SEM and NH3-TPD. The effect of Ni/W atomic ratio, pore structure and support acidity on the texture, metal dispersion and reducibility of the catalysts were investigated. Hydrotreating of naphthalene-cresol were carried out to test the catalysts activities and the reaction pathways and catalytic mechanism were proposed. Hydroprocessing of coal tar fraction with selected catalysts were performed to examine the production of cycloalkanes and hydroaromatics from phenols and aromatics. The results showed that the content of cycloalkanes and hydroaromatics increased significantly with the prepared catalysts, especially the one with5%zeolite Y.更多还原