Improvement of the CO2 Absorption Performance Using Ionic Liquid [NH2emim][BF4] and [emim][BF4]/[bmim][BF4] Mixtures
Improvement of the CO2 Absorption Performance Using Ionic Liquid [NH2emim][BF4] and [emim][BF4]/[bmim][BF4] Mixtures
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DOI：
10.1021/ef301541s
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发表时间：
2013-01
期刊：
影响因子：
5.3
通讯作者：
Mei Wang;Liqi Zhang;L. Gao;K. Pi;Junying Zhang;Chu-guang Zheng
中科院分区：
文献类型：
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作者：
Mei Wang;Liqi Zhang;L. Gao;K. Pi;Junying Zhang;Chu-guang Zheng
功能化离子液体在CO2吸收中具有潜在的减排优势。然而，功能离子液体的较高粘度极大地影响了CO2吸收分离过程。为提高离子液体的吸收性能，利用功能离子液体[NH 2 e-mim][BF 4]与低粘度离子液体[emim][BF 4]/[bmim][BF 4]在CO2还原方面的优势，合成了功能离子液体[NH 2 e-mim][BF 4]，并将其与低粘度离子液体[emim][BF 4]/[bmim][BF 4]混合，考察了二元离子液体的CO2吸收效果和再生性能。当[NH 2 e-mim][BF 4]（X[NH 2 e-mim][BF 4]）的摩尔分数为0.4时，{[NH 2 e-mim][BF 4] + [emim][BF 4]/[bmim][BF 4]}表现出较好的性能，且CO2吸收性能随温度的升高而降低。随着X[NH_2 e-mim][BF_4]的增加和温度的降低，二元体系的密度和粘度均增加。在0.1 MPa下，当X[NH 2 e-mim][BF 4]= 0.4时，再生温度约为353.15 K。在吸收和再生的五个周期中..
Functional ionic liquids (ILs) have potential advantages in reducing CO2 emissions when applied for CO2 absorption. However, the higher viscosity of functional ILs greatly affects the CO2 absorption separation process. To improve the absorption performance, a functional IL [NH2e-mim][BF4] was synthesized and mixed with low-viscosity conventional ILs [emim][BF4]/[bmim][BF4] based on their respective advantages in terms of CO2 reduction, and the CO2 absorption effect and regeneration performance of the binary ILs were investigated. {[NH2e-mim][BF4] + [emim][BF4]/[bmim][BF4]} showed better performance when the mole fraction of [NH2e-mim][BF4] (X[NH2e-mim][BF4]) was 0.4, and the CO2 absorption performance reduced with the increase in the temperature. Density and viscosity of the binary rose with the increase of X[NH2e-mim][BF4] and decrease in temperature. The optimal regeneration temperature was approximately 353.15 K when X[NH2e-mim][BF4] was 0.4 in 0.1 MPa. During five cycles of absorption and regeneration...