丁烷添加的甲烷芳构化催化剂的研究

甲烷在无氧环境下催化脱氢芳构化可以将其直接转化为高附加值的液态芳烃产品，和副产氢气。 本文针对目前甲烷无氧芳构化反应温度过高，首次提出添加正丁烷的甲烷芳构化催化剂研究，以图通过正丁烷诱导活化甲烷在更低的温度下芳构化。在实验室条件下研究添加丁烷反应的共活化反应机理，研究反应条件，如温度、空速、原料比、载体HZSM-5分子筛的硅铝比、负载金属的方式、种类和负载顺序等对反应的影响，使反应体系达到最优化；采用SEM、XRD、NH3-TPD、IR-吡啶和氮气吸附仪、紫外拉曼等分析催化剂的性能与负载金属的量和种类、酸性质和催化剂结构、积炭等之间的关系；同时采用13C技术研究甲烷参与反应的程度和在芳烃产物中的分布规律。 我区具有丰富的天然气和C4烃（如LPG），由于天然气燃料的广泛使用，LPG基本退出燃料市场，价格低廉而丰富的LPG为该项技术研发提供了有力保证。

Methane can convert directly into more valuable liquid aromatics products and by-product-hydrogen without oxigen. Now，one of the barriers of the non-oxidative conversion of methane into aromatic hydrocarbons is the high reaction temperature. In this paper, aromatization of methane using n-butane as co-reactant was firstly put forward, adding n-butane makes the reaction occur at a lower temperature. Under thelaboratory，the co-reaction activated mechanism of methane was studied preliminarily. The temperature, space velocity, the ratio methane/n-butane, the SiO2/Al2O3 of the support and type and order of the loaded metals were investigated in detail and the optimized reaction conditions were achieved. The relationship of the performance of catalyst and the type and quantity of the loaded metal, acid properties, catalyst structure and the depoited coke on the catalyst was obtained by using SEM, XRD，NH3-TPD, IR-Pyridine, UV Raman, TG-DTA, etc. In addition， 13C-methane was used to study the extent of the reaction and the distribution of 13C in aromatic products. In XinJiang，Nature gas and C4 hydrocarbon,such as LPG are abundant.Owing to nature gas widely used as fuel , cheap and abundant LPG is powerful guarantee for this study.