以哌啶为模板剂的MCM-22分子筛合成  

Synthesis of MCM-22 Molecular Sieve Using Piperidine as an Organic Template

作　　者：张斌[1,2] 王振东[2] 孙洪敏[2] 杨为民[2] 吴鹏[1] 

机构地区：[1]华东师范大学化学系上海市绿色化学与化工过程绿色化重点实验室,上海200062 [2]中国石油化工股份有限公司上海石油化工研究院,上海201208

出　　处：《化学反应工程与工艺》2013年第1期19-23,共5页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金项目(20925310;U1162102)

摘　　要：为合成不同硅铝比的MCM-22分子筛,对分子筛配料中的硅铝比、碱度、模板剂和晶化助剂用量等进行了考察,并用X射线衍射、扫描电镜、电感耦合等离子体发射光谱、X射线光电子能谱仪及氮气吸脱附等手段对样品进行了表征。结果表明,以哌啶（PI）为模板剂、硼酸（BA）为晶化助剂,在n（OH-）/n（SiO2）为0.03-0.20、n（PI）/n（SiO2）大于0.03及n（BA）/n（SiO2）大于0.05的条件下,可得到硅铝比为25-500的MCM-22分子筛。与以六亚甲基亚胺为模板剂相比,以哌啶为模板剂制得的MCM-22分子筛具有更小的晶粒尺寸和更大的比表面积。For synthesizing MCM-22 molecular sieves with different silica-alumina ratio, the effects of ingredient SiO2 to A1203 ratio, alkali concentration, and the amount of organic template and crystallization-supporting agent, on the molecular sieves were studied systematically. The obtained MCM-22 samples were characterized by X-ray diffraction, scanning electron microscopy, inductively coupled plasma-atomic emission spectrometry, X-ray photoelectron spectroscopy and N2 adsorption-desorption. The results show that, MCM-22 molecular sieves with silica-alumina ratio of 25-500 could be successfully synthesized under this condition： using piperidine （PI） as the organic template and boric acid （BA） as the crystallization-supporting agent, n（OH＇）/n（Si02） of 0.03-0.20, n（PI）/n（Si02） 〉 0.03 and n（BA）/n（Si02） 〉 0.05. Moreover, the obtained molecular sieves using PI as the template have a smaller particle size and a larger specific surface area than those using hexamethyleneimine as the template.

关 键 词：MCM-22分子筛 硅铝比 哌啶 晶化助剂 模板剂 

分 类 号：TQ426[化学工程]