Poly(Ionic Liquid) Sorbents and Membranes for CO2 Separation
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United States of America Patent
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Issued Date -
Aug 29, 2013
app pub date -
Sep 21, 2012
filing date -
Aug 5, 2004
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Abandoned
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Abstract
Polymerizable ionic liquid monomers and their corresponding polymers (poly(ionic liquid)s) are created and found to exhibit high CO2 sorption. The poly(ionic liquid)s have enhanced and reproducible CO2 sorption capacities and sorption/desorption rates relative to room-temperature ionic liquids. Furthermore, these materials exhibit selectivity relative to other gases such as nitrogen, methane, and oxygen. They are useful as efficient separation agents, such sorbents and membranes. Novel free-radical and condensation polymerization approaches are used in the preparation of the poly(ionic liquids).
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