Novel silica membranes for high temperature gas separations

被引：18
作者：
Bighane, Neha [1 ]
Koros, William J. [1 ]
机构：
[1] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA
来源：
JOURNAL OF MEMBRANE SCIENCE | 2011年 / 371卷 / 1-2期
关键词：
Silica; Membrane; Oxidative thermolysis; HYDROGEN SEPARATION; MICROPOROUS SILICA; HYDROTHERMAL STABILITY; PERFORMANCE; PERMEATION; ALUMINA;
D O I：
10.1016/j.memsci.2011.01.045
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
This article describes fabrication of novel silica membranes derived via controlled oxidative thermolysis of polydimethylsiloxane and their gas separation performance. The optimized protocol for fabrication of the silica membranes is described and pure gas separation performance in the temperature range 35-80 degrees C is presented. It is observed that the membranes exhibit activated transport for small gas penetrants such as He, H-2 and CO2. The membranes can withstand temperatures up to 350 degrees C in air and may ultimately find use in H-2/CO2 separations to improve efficiency in the water-gas shift reactor process. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：254 / 262
页数：9
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