doi:10.16597/j.cnki.issn.1002-154x.2025.05.008
甲苯和甲醇烷基化合成对二甲苯催化剂研究进展
朱倩倩
（中国石化扬子石油化工有限公司 南京研究院，南京 210048）
摘 要 甲苯和甲醇择形烷基化工艺利用石油化工相对过剩的甲苯以及煤化工廉价的甲醇作为原料生产对二甲苯，实现了石油化工与煤化工的有机结合，具有较好的发展前景。开发高活性、高选择性和高稳定性的催化剂是该技术的核心。作者综述了分子筛催化甲苯和甲醇择形烷基化合成对二甲苯的研究进展，包括不同种类的分子筛催化剂的对比，改性 ZSM-5 分子筛、核壳复合分子筛及 ZSM-5 分子筛后处理对催化剂性能的影响。通过对各类催化剂技术难点的分析，对甲苯和甲醇择形烷基化合成对二甲苯催化剂未来发展方向提出建议。
关键词 甲苯 甲醇 对二甲苯 烷基化 ZSM-5
Research Progress on Catalysts for the Alkylation of Toluene with Methanol to Produce p-Xylene
ZHU Qianqian
(Nanjing Research Institute, Sinopec Yangzi Petrochemical Co., Ltd., Nanjing 210048, China)
Abstract Alkylation of toluene with methanol uses a large amount of surplus toluene in petrochemical industry and cheap methanol in coal chemical industry as raw materials to produce p-xylene. The organic combination of petrochemical industry and coal chemical industry is realized, which has good development prospects. The development of highly active, highly selective and highly stable catalysts is the core of this technology. The research progress of molecular sieve catalyzed toluene-methanol selective alkylation to p-xylene, including comparison of different types of molecular sieve catalysts, modified ZSM - 5 molecular sieve, core-shell composite molecular sieve and post-treatment of ZSM - 5 molecular sieve. By analyzing the technical difficulties of various catalysts, suggestions are made for the future development direction of catalysts for the selective alkylation of toluene and methanol to produce p-xylene.
Keywords toluene methanol p-xylene alkylation ZSM-5