Abstract
Three mixed ionic liquids ([Choline][Pro]/[EMIm][N(CN)2], [Choline][Pro]/[bmim][PF6] and [Choline][Pro]/[HMIm][NTf2]) were prepared by mixing room temperature ionic liquids (RTILs) with [Choline][Pro]. They were used to prepare SILMs by the impregnation method. Effects of operating temperature, pressure, type and content of RTILs on CO2/N2 separation performance of SILMs were investigated. The results showed that the CO2 permeability of the SILMs changed between 343.3-1936.9 barrer and CO2/N2 selectivity was in range of 10.3-34.8. Non-equilibrium thermodynamics was used to analyze CO2 transport mechanism in SILMs. The overall resistance showed a trend from decline to rise by increasing the proportion of [HMIm][NTf2] in the mixed ILs, which was in accordance with CO2 permeability in SILMs.
Original language | English |
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Pages (from-to) | 2771-2780 |
Number of pages | 10 |
Journal | Huagong Xuebao/CIESC Journal |
Volume | 68 |
Issue number | 7 |
DOIs | |
State | Published - 1 Jul 2017 |
Keywords
- CO
- Ionic liquids
- SILMs
- Separation
- [Choline][Pro]