Effect of 1-Methylimidazole on CO2 Absorption by Diethylenetriamine Aqueous Solutions

被引：3
作者：
You, Jong Kyun [1 ]
Lee, Hwa Young [2 ]
Hong, Yeon Ki [2 ]
机构：
[1] Korea Inst Energy Res, Green Energy Proc Lab, Gajeong Ro 127, Daejeon 34129, South Korea
[2] Korea Natl Univ Transportat, Sch Chem & Mat Engn, Daehak Ro 50, Chungju 27469, Chungbuk, South Korea
来源：
CHEMICAL ENGINEERING & TECHNOLOGY | 2017年 / 40卷 / 12期
关键词：
CO2; capture; Diethylenetriamine; 1-Methylimidazole; Phase splitting; Solubility; BIPHASIC SOLVENTS; CARBON-DIOXIDE; KINETICS; CAPTURE; REGENERATION; DETA;
D O I：
10.1002/ceat.201700150
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Phase-splitting absorbents represent a promising technology in relation to the low energy levels required during the CO2 capture process. 1-Methylimidazole was added to a diethylenetriamine (DETA) aqueous solution for high CO2 loading via phase splitting of absorbents during CO2 absorption. Phase splitting was observed during the absorption process when the CO2 loading reached a value suitable for the mixture of DETA, 1-methylimidazole, and water. The distribution of individual components in each phase was determined according to the total organic carbon and gas chromatography. DETA and CO2 were concentrated in the bottom phase, 1-methylimidazole mostly in the top phase. Phase splitting during CO2 absorption was mainly due to the solubility limitation of DETA carbamate into 1-methylimidazole.
引用
收藏
页码：2238 / 2242
页数：5
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