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Unusual effect of Ru complexes on the permeation of carbon monoxide and oxygen gas mixture through polycarbonate membrane

✍ Scribed by Il-Wun Shim; Won-Suk Oh; Dong-Kyeog Seo

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
375 KB
Volume
34
Category
Article
ISSN
1381-5148

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✦ Synopsis

20 wt% RuClj.3HzO-containing polycarbonate membranes are prepared by using co-solvent and using these metalcontaining membranes, over 99% of pure oxygen (02) gas was recovered from a 1: 1 mixture of O2 and CO gas mixture at room temperature. Under the described conditions, the Ru complexes are inert to oxygen, but quite reactive to carbon monoxide gas molecules. Very stable Ru-carbonyl species are found to be formed during the gas permeation in the membrane, indicating that there are relatively strong interaction between CO gas molecules and the Ru complexes incorporated into the polycarbonate membrane. Such preferential interactions are believed to give rise to a drastic change in permeation selectivity of a organic polymer membrane.

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