变温晶化合成高渗透率ZSM-5沸石膜

被引：7

作者：

李永生

王金渠

施剑林

陈连璋

郭树才

严东生

机构：

[1] 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室

[2] 大连理工大学化工学院吸附与无机膜研究所

[3] 中国科学院上海硅

来源：

高等学校化学学报 | 2002年 / 10期

关键词：

ZSM-5沸石膜; 变温晶化; 渗透率; 分离因数;

D O I：

暂无

中图分类号：

TQ424 [吸附剂];

学科分类号：

0817 ;

摘要：

High-permeance ZSM-5 zeolite membrane was prepared on porous tubular α-Al 2O 3 support by varying-temperature hydrothermal synthesis. XRD patterns show that the membrane consists of ZSM-5 zeolite crystals. SEM analysis indicates that few defects exist in the membrane and the thickness of the membrane is about 9 μm. The hydrogen permeance through the membrane is about 2.4×10 -6 mol/(m 2·s·Pa), and the separation factor for n-C 4H 10/i-C 4H 10 mixture (volume ratio 1∶1) is 40, which indicates that it has a high quality with high permeance and selectivity. Repeated nucleation and re-growth of the crystals on the support result in the dense membrane formation.

引用

页码：1857 / 1859

页数：3