摘要
催化裂化装置在多产丙烯方面扮演着重要的角色,ZSM-5分子筛由于具有特殊的孔道结构、活性较高以及择形催化等特点,是催化裂化多产丙烯主要催化剂。综述采用改性手段增强ZSM-5分子筛水热稳定性和引入介孔提高分子可及性研究进展,主要包括F改性,P改性,过渡金属及稀土掺杂等改性手段,以及物理化学法脱铝脱硅,软模板法和硬模板法修饰ZSM-5分子筛孔道。
The catalytic cracking unit plays an important role in the production of propylene-producing chemical raw materials.ZSM-5 can be used for catalytic cracking of propylene-producing active components because of its special pore structure,high activity,and shape-selective catalysis.In this paper,the research progress of improving the hydrothermal stability of ZSM-5 by post-modification and introducing mesoporous to improve the molecular accessibility are reviewed,mainly including F modification,P modification,transition metal doping and rare earth modification,and physicochemical dealumination-desilication,soft template method and hard template method to modify the channel of ZSM-5.
作者
王漫云
段宏昌
郑云峰
刘涛
谭争国
Wang Manyun;Duan Hongchang;Zheng Yunfeng;Liu Tao;Tan Zhengguo(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,Gansu,China)
出处
《工业催化》
CAS
2020年第8期15-20,共6页
Industrial Catalysis
关键词
催化剂工程
ZSM-5分子筛
催化裂化
改性
多产丙烯
catalyst engineering
ZSM-5 zeolite
catalytic cracking
modification
propylene-producing
