甲醇制烃反应机理研究进展

综述了甲醇制烃(MTH)反应机理的研究概况.分别介绍了MTH反应过程中的二甲醚生成、烃池机理、深度反应、催化剂失活原因和副产物甲烷的生成途径,重点综述了烃池机理的研究进展和存在的争议.指出了明确分子筛结构和酸性对烃池物种类型、低碳烯烃生成路径的影响以及初始C—C键形成机制是未来MTH机理研究的方向,据此指导并开发出抗积炭失活能力强、目标产物选择性高的催化剂仍是改进MTH工艺的关键.

Advance in Research on the Mechanism of Methanol Conversion to Hydrocarbons

The summary of research on the mechanism of methanol conversion to hydrocarbons (MTH) was reviewed. Several reaction processes including the formations of dimethyl ether, hydrocarbon pool mechanism, deep reactions, catalyst deactivation and the formation routes of by-product methane were introduced respectively, mainly focusing on the research progress and the existing dispute of hydrocarbon pool mechanism. Meanwhile this review pointed out making it clear the effects of zeolite structure and acidity on the hydrocarbon-pool species and olefins formation routes, and the initial C-C bond formation mechanism were the future research directions of the MTH reaction mechanism. On the basis of that, developing the catalyst with higher anti-coking deactivation ability and higher target product selectivity was still the key points for improving MTH technology.