Performance of single-component CO₂-binding organic liquids (CO₂BOLs) for post combustion CO₂ capture

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• 作者：David J. Heldebrant^a ; ^{david.heldebrant@pnl.gov"" rel=""nofollow} ; Phillip K. Koech^a ; James E. Rainbolt^a ; Feng Zheng^a ; Tricia Smurthwaite^a ; Charles J. Freeman^a ; Merit Oss^b ; Ivo Leito^b
• 关键词：Liquid based carbon dioxide capture ; Switchable ionic liquids ; Organic ionic liquids ; Alkanolamines ; Alkanolamidines ; Alkanolguanidines
• 刊名：Chemical Engineering Journal
• 出版年：2011
• 出版时间：15 July 2011
• 年：2011
• 卷：171
• 期：3
• 页码：794-800
• 全文大小：273 K

文摘

We report the performance of multiple CO₂ binding organic liquids (CO₂BOLs) as solvent systems for post combustion gas capture. Alkanolguanidines and alkanolamidines are single component CO₂BOLs that reversibly bind CO₂ chemically as liquid zwitterionic amidinium/guanidinium alkylcarbonates. Select alkanolguanidines/alkanolamidines and guanidine/alcohol mixtures were tested for CO₂ capacity and solvent lifetime. Solvent performance of these three CO₂BOLs was assessed by batchwise CO₂ uptake and release over multiple cycles. We report each CO₂BOL's activity and solvent durability with and without water.