Growth mechanism of a preferentially oriented mordenite membrane

作     者：厉刚 林瑞森 KIKUCHI Eiichi MATSUKATA Masahiko 

作者机构：Department of Chemistry Zhejiang University Hangzhou 310027 China Department of Applied Chemistry Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo 169-8555 Japan 

出 版 物：《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 (浙江大学学报（英文版）B辑（生物医学与生物技术）)

年 卷 期：2005年第6卷第5期

页      面：369-372页

核心收录：

学科分类：0810[工学-信息与通信工程] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：Mordenite Zeolite membrane Orientation Evolutionary selection 

摘      要：A preferentially oriented mordenite membrane was successfully prepared on a seeded porous α-alumina support. Characterization results of XRD (X-ray diffractometer) and FE-SEM (field emission scanning electron microscope) revealed that evolutionary selection might predominantly contribute to the formation of the sharply oriented mordenite membrane. The nec- essary conditions under which evolutionary selection occurs are: (a) the number density of nuclei on the support surface should be high enough at the early stage; (b) the crystals should grow fastest along one direction; and (c) the zeolite layer should proceed via the successive growth of the crystals nucleated on the support surface instead of the accumulation of the crystals formed in the bulk solution.