✦ LIBER ✦

Permeation properties of microporous membranes prepared via coating of evaporated polydimethylsilane

✍ Scribed by Chih-Lung Chen; Dah-Shyang Tsai

Book ID: 103833847
Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 159 KB
Volume: 237
Category: Article
ISSN: 0376-7388
DOI: 10.1016/j.memsci.2004.03.010

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✦ Synopsis

A microporous membrane has been prepared by coating alumina support with evaporated polydimethylsilane, followed by curing and pyrolysis. Permeation properties of the membrane exhibit gas separation capability. At permeation temperature 180 • C, helium permeance is 1.1 × 10 -9 , nitrogen 1.5 × 10 -10 , and iso-butane 3.7 × 10 -11 mol s -1 Pa -1 m -2 . The membrane permeance is enhanced when the pyrolysis is carried out in the presence of low-pressure steam, and its percentage increase rises with the pyrolysis temperature. But the membrane selectivities of permanent gas pairs are damaged.

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