Synthesis and characterization of Ce-ZSM-5 zeolite membranes

被引：34

作者：

Cheng, Yue

Li, Jian-Sheng

Wang, Lian-Jun ^{[1
]}

Sun, Xiu-Yun

Liu, Xiao-Dong

机构：

[1] Nanjing Univ Sci & Technol, Dept Environm Sci & Engn, Nanjing 210094, Peoples R China

[2] Jingdezhen Ceram Inst, Jingdezhen 333001, Peoples R China

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2006年 / 51卷 / 02期

基金：

高等学校博士学科点专项科研基金;

关键词：

nanosized ZSM-5 zeolite; seeds; Ce-ZSM-5; membrane; characterization; synthesis factors;

D O I：

10.1016/j.seppur.2006.02.002

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effects of synthesis parameters on the property of Ce-ZSM-5 zeolite membrane grown onto porous a-alumina supports were investigated. The zeolite membranes synthesized were characterized by XRD, DTA/TG, FT-IR, SEM, EDS and single gas permeation. Orthogonal test indicate, aging at lower temperature and longer stirring time were preferred for Ce-ZSM-5 zeolite membrane. Lower alkalinity and higher Ce2O3/SiO2 favor the formation of pure Ce-ZSM-5 structure. Higher alkalinity and lower SiO2/Ce2O3, impurities such as quartz and cerium oxide, which hinder the Ce-ZSM-5 formation were easily produced. Under optimum synthesis conditions, the permeances for H-2, N-2, CH4, CO2 were 4.73 x 10(-6), 1.56 x 10(-6), 1.51 x 10(-6) and 1.36 x 10(-6) mol/m(2) s Pa, respectively; the ideal selectivity of membrane at room temperature for H-2/CO2, H-2/N-2, H-2/CH4 were 3.13, 3.03, 3.48, respectively. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：210 / 218

页数：9

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