混合胺体系中MCM-49/ZSM-35复合分子筛的晶化过程  

The Crystallization Process of MCM-49/ZSM-35 Composite Zeolites in a Mixed-Amine System

作　　者：谢素娟[1] 刘克峰[1,2] 刘盛林[1] 刘勇[1] 张维萍[3] 徐龙伢[1,3] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院研究生院,北京100049 [3]中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连116023

出　　处：《催化学报》2010年第8期1071-1076,共6页

基　　金：国家重点基础研究发展计划(973计划;2009CB623501)

摘　　要：采用X射线衍射、N2吸附-脱附、扫描电镜和傅里叶变换红外光谱等技术,研究了MCM-49/ZSM-35复合分子筛在Na2O-SiO2-Al2O3-CHA(环己胺)-HMI(六亚甲基亚胺)-H2O合成体系中,先在低温80°C老化4h,再经160°C晶化不同时间的演变过程.结果表明,在该混合胺体系中,首先生成MCM-49分子筛,随着晶化时间的延长,形成ZSM-35含量逐渐增加的MCM-49/ZSM-35复合分子筛,最后生成纯ZSM-35分子筛;ZSM-35的生成是以MCM-49分子筛的消耗为代价的.The crystallization process of MCM-49/ZSM-35 composite zeolites in the Na2O-SiO2-Al2O3-CHA （cyclohexamine）-HMI （hexamethyleneimine）-H2O system was investigated by X-ray diffraction,N2 adsorption,scanning electron microscopy,and Fourier transform infrared spectroscopy.The results showed that in the HMI-CHA system,pure phase MCM-49 was obtained first,then MCM-49/ZSM-35 composite zeolites were gradually formed with increasing ZSM-35 content upon the crystallization time,and finally pure phase ZSM-35 was produced.Moreover,the formation of ZSM-35 zeolite was based on the consumption of MCM-49 zeolite in this mixed-amine system.

关 键 词：MCM-49 ZSM-35 复合分子筛 合成 晶化过程 环己胺 六亚甲基亚胺 

分 类 号：O643.32[理学—物理化学]