低碳化学与化工2024，Vol.49Issue(6)：24-34,11.DOI:10.12434/j.issn.2097-2547.20230335
甲醇/二甲醚制烯烃催化剂改性的研究进展
Research progress on catalyst modification for methanol/dimethyl ether to olefins
摘要
Abstract
Methanol to olefins(MTO)process is widely used in industry,but the molecular sieve catalysts used in the process still have some issues,such as high selectivity of C4+products(butene,butane,etc.)and easy carbon deposition and deactivation.Therefore,it is necessary to further explore methods to enhance the selectivity of low carbon olefins and inhibit carbon deposition.The research progress on grain size regulation,pore regulation and acid property regulation of ZSM-5 and SAPO-34,and the reaction characteristics of dimethyl ether to olefins(DTO)in molecular sieve system were reviewed.The olefins formation mechanism in the hydrocarbon pool mechanism was summarized,and the potential of using mordenite(MOR)in MTO and DTO reaction systems was briefly discussed,such as its potential to further regulate the distribution of low carbon olefins in the final products,and it is anticipated that this can help regulate the distribution of low carbon olefins in the final products.The reaction mechanisms for MTO and DTO reactions remain undetermined,and current catalyst modification schemes can provide slight improvements in product selectivity of low carbon olefins and delay carbon deposition by mesoporous structures.In the future,building composite catalysts is a direct solution to solve the problems of low selectivity ratio of ethylene and propylene and easy carbon deposition in industrialization.关键词
甲醇/二甲醚/烯烃/催化剂改性/ZSM-5/SAPO-34Key words
methanol/dimethyl ether/olefin/catalyst modification/ZSM-5/SAPO-34分类
化学化工引用本文复制引用
刘应慧,王鸿晶,王晓胜,李然家,余长春,杨鹏程..甲醇/二甲醚制烯烃催化剂改性的研究进展[J].低碳化学与化工,2024,49(6):24-34,11.基金项目
国家自然科学基金(22008260) （22008260）
中国石油大学(北京)科研基金(2462021YJRC011). （北京）
