不同有机结构导向剂合成MCM-22分子筛及其催化性能  

MCM-22 zeolites synthesized with different organic structure-directing agents and catalytic performances thereof

作　　者：王振东 刘闯 孙洪敏 沈震浩 杨为民 Wang Zhendong;Liu Chuang;Sun Hongmin;Shen Zhenhao;Yang Weimin(Sinopec Shanghai Research Institute of Petrochemical Technology,State Key Laboratory of Green Chemical Engineering and Industrial Catalysis,Shanghai 201208,China)

机构地区：[1]中国石化上海石油化工研究院绿色化工与工业催化国家重点实验室,上海201208

出　　处：《石油化工》2020年第3期209-213,共5页Petrochemical Technology

基　　金：国家重点研发计划项目(2017YFB0702800);国家自然科学基金委员会项目(21503280,21972168)。

摘　　要：分别以六亚甲基亚胺(HMI)、哌啶(PI)和高哌嗪(HPZ)为有机结构导向剂(OSDA)水热晶化法合成了MCM-22分子筛,采用XRD、SEM、N2吸附-脱附等分析方法对合成的MCM-22分子筛进行表征,利用苯与乙烯液相烷基化制乙苯反应和1,3,5-三异丙苯裂解反应考察了MCM-22分子筛的催化性能。实验结果表明,采用HMI、PI及HPZ三种OSDA均能合成高结晶度的MCM-22分子筛,其中,以PI和HMI为OSDA合成的MCM-22分子筛具有较好的催化性能,PI可用作MCM-22分子筛合成的备选OSDA,但需要严格控制原料组成及晶化条件;以HPZ合成的MCM-22分子筛催化性能不理想。MCM-22 zeolites were synthesized through hydrothermal crystallization using hexamethyleneimine(HMI),piperidine(PI)and homopiperazine(HPZ)as organic structure-directing agents(OSDAs).The obtained MCM-22 zeolites were characterized by XRD,SEM,N2 adsorption-desorption.The catalytic performances of the synthesized MCM-22 were tested in ethylbenzene preparation by liquid-phase alkylation of benzene with ethylene and cracking of 1,3,5-triisopropylbenzene.All the three OSDAs are effective for the syntheses of high crystalline MCM-22 zeolites,and those synthesized using PI and HMI showed good catalytic performances.PI is an alternative OSDA for the synthesis of MCM-22 zeolite under the premise of strictly controlling the molar composition of the starting mixture and crystallization condition.MCM-22 zeolite synthesized using HPZ did not show ideal catalytic performance.

关 键 词：MCM-22分子筛 有机结构导向剂 六亚甲基亚胺 哌啶 高哌嗪 

分 类 号：TQ426.6[化学工程]