High molecular permeance in a poreless ceramic membrane

被引：81

作者：

Gu, Yunfeng ^{[1
]}

Oyama, S. Ted ^{[1
]}

机构：

[1] Virginia Tech, Dept Chem Engn, Blacksburg, VA 24061 USA

来源：

ADVANCED MATERIALS | 2007年 / 19卷 / 12期

关键词：

D O I：

10.1002/adma.200602637

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel composite membrane without continuous pores (see figure) with very high permeance for hydrogen is reported. The membrane is composed of a thin (30 nm) permselective silica layer deposited on a graded gamma-alumina multilayer substrate, consisting of size-controlled boehmite (AlOOH) sols deposited in order of decreasing size on a macroporous alumina support. A theory involving jumps of permeating molecules between adjacent solubility sites explains its behavior.

引用

页码：1636 / +

页数：6

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