Reversible and Selective O2 Binding Using a New Thermoresponsive Cobalt(II)-Based Ionic Liquid

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• 作者：Yuki Kohno ; Matthew G. Cowan ; Akiyoshi Okafuji ; Hiroyuki Ohno ; Douglas L. Gin ; Richard D. Noble
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2015
• 出版时间：December 9, 2015
• 年：2015
• 卷：54
• 期：48
• 页码：12214-12216
• 全文大小：210K
• ISSN：1520-5045

文摘

A new cobalt(II)-based metal-containing ionic liquid (MCIL), 1, has been prepared that reversibly and selectively absorbs O₂ with an associated colorimetric change. This MCIL was impregnated into a porous PTFE polymer support, and the resulting supported membranes show higher O₂ sorption over N₂ with increasing loading levels of 1. The O₂/N₂ selectivity of these 1-impregnated membranes was determined to be as high as 26 卤 8 at 25 掳C when 鈭?.9 bar of feed gas pressure was applied. The absorbed O₂ can be removed by moderate heating of the samples from 25 掳C to 60 掳C in vacuo. The high level of O₂ sorption in these 1-impregnated membranes was maintained for at least five successive sorption/desorption cycles.