摘要
由于不同学者所采用催化剂和实验条件等的不同,对甲醇制烯烃(Methanol-to-olefin,MTO)反应机理的认识不尽相同,且存在一定的争议。本研究综述了近年来MTO反应机理研究的主要进展,目前较为认可的机理有卡宾机理、自由基机理、碳正离子机理和烃池机理等;介绍了MTO反应的影响因素以及前述不同反应机理的产生背景,并与相关文献数据结合,对各反应机理的合理性及其不足进行深入分析;基于文献中对催化剂表征及反应过程研究的相关结果,指出烃池机理能够更为合理地解释现有实验现象,表明烃池机理较其他几种反应机理具有更广泛的适用性。
There are many arguments on the methanol-to-olefin reaction as different catalysts and experimental conditions were employed by different researchers.The Carbene mechanism,radical mechanism,carbocationic mechanism and hydrocarbon-pool mechanism are the main popular mechanisms for MTO process in literatures.In this paper,the recent progress in the influence factors and different mechanisms for MTO process were reviewed and analyzed.It is pointed out that the hydrocarbon-pool mechanism is the most acceptable mechanism for MTO process.By applying this mechanism to explain the experimental phenomena,it is further concluded that it is more applicable than other mechanisms.
出处
《化学工业与工程》
CAS
2010年第5期443-449,共7页
Chemical Industry and Engineering
基金
中国石油化工集团公司课题(合同号:S107029.2)
