多级孔道ZSM-5分子筛的合成及其催化应用  

Hierarchical ZSM-5 zeolite:Synthesis and catalytic applications

作　　者：崔生航 张君涛[1] 申志兵[1] 

机构地区：[1]西安石油大学石油炼化工程技术研究中心,陕西西安710065

出　　处：《化工进展》2015年第9期3311-3316,3336,共7页Chemical Industry and Engineering Progress

摘　　要：多级孔道ZSM-5分子筛具有微孔沸石分子筛良好的择形催化性能和介孔材料优异的传质扩散性能,在催化领域显示出良好的应用前景。本文综述了近年来多级孔道ZSM-5分子筛的研究进展,重点介绍了多级孔道ZSM-5分子筛的不同合成方法,包括后处理法、硬模板法和软模板法等,同时介绍了不同方法得到的多级孔道ZSM-5分子筛在催化反应中的应用,分析表明多级孔道ZSM-5分子筛以其良好的扩散性能和适宜的酸性提高了反应转化率和目标产物选择性。最后对多级孔道ZSM-5分子筛的发展方向进行了展望,指出研发简单、经济和环保的新合成路线是多级孔道ZSM-5分子筛发展中的重大挑战,深入研究多级孔道分子筛中介孔的形成机理和开发具有多级孔道整体式催化剂以及负载型多级孔道ZSM-5分子筛是今后的研究重点。Due to high shape selectivity of microporous zeolite and the excellent mass transport of the mesoporous material,the hierarchical ZSM-5 zeolite has potential applications in catalytic field. The synthesis methods and application progress of hierarchical ZSM-5 zeolite in recent years are reviewed in this paper. Various approaches of hierarchical ZSM-5 zeolite synthesis were introduced,including post-treatment method,hard templating method and soft templating method. In addition,the catalytic applications of the as-synthesized zeolites were discussed. It was demonstrated that the reaction conversion and selectivity of target products were improved due to the excellent mass transport and appropriate acidity of the hierarchical ZSM-5 zeolite. This paper also forecasted the development of the hierarchical ZSM-5 zeolite in chemical industry. It was pointed out that the development of facile, economic and green routes towards the synthesis of hierarchical ZSM-5 zeolite would be a challenge in modern industrial catalysis. Research should focus on the mechanism of the mesopore formation,the development of the hierarchical ZSM-5 monolith zeolite as well as the supported hierarchical ZSM-5 zeolites.

关 键 词：多级孔道分子筛 ZSM-5 后处理 硬模板 软模板 

分 类 号：TQ424.25[化学工程]