甲烷无氧芳构化强化措施

摘要

Effect of some reinforcement measures on oxygen-free methane aromatization was described,such as adding the second metal (transition metal,noble metal or rare earth metal) to Mo/HZSM-5 catalysts,modification of support by different methods (zeolite dealumination,alkali treatment,secondary synthesis or zeolite silanation) and adding other gas components (light hydrocarbons,CO,H2,CO2,NOx or water vapor) in methane.At last,it's pointed out that the further research should be to seek better performance catalysts and more active gas additive components,as well as other possible effective process to reduce the reaction temperature and increase the methane conversion rate,the yield of aromatics and the carbon deposition resistance of catalysts.%综述了在Mo/HZSM-5上加入第二活性金属组分(如过渡金属、贵金属、稀土金属等)、采用不同的方法对载体进行修饰、改性(如分子筛脱铝、碱处理、二次合成、硅烷化处理等)以及在甲烷中添加其他气体组分(如低碳烃、CO、H2、CO2、NOx及水蒸气)等强化措施对甲烷无氧芳构化的影响.指出未来仍需进一步研究寻求性能更好的催化剂,活性更高的气体添加组分,以及其他可行有效的工艺来降低反应温度,提高甲烷转化率、芳烃收率和催化剂的抗积碳能力.