CO2/N2 separation performance of supported ionic liquid membrane fabricated by [Choline][Pro]/RTILs

doi:10.11949/j.issn.0438-1157.20170187

CIESC Journal ›› 2017, Vol. 68 ›› Issue (7): 2771-2780.DOI: 10.11949/j.issn.0438-1157.20170187

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CO₂/N₂ separation performance of supported ionic liquid membrane fabricated by [Choline][Pro]/RTILs

ZHAO Yankai¹, FAN Tengteng², XIE Wenlong³, ZHANG Suoying¹, LIU Chang¹, FENG Xin¹, LU Xiaohua¹

1 State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China;
2 Feymer Membrane Technology Co, Suzhou 215613, Jiangsu, China;
3 Hengtong Optical Material Co, Suzhou 215200, Jiangsu, China

Received:2017-02-27 Revised:2017-04-13 Online:2017-07-05 Published:2017-07-05
Contact: 10.11949/j.issn.0438-1157.20170187
Supported by:
supported by the National Basic Research Program of China (2013CB733501), the National Natural Science Foundation of China (21136004, 21476106), the Natural Science Foundation of Jiangsu, China (BK20160993), the Postdoctoral Science Foundation of China (2016M591837) and the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions, China (PAPD).

胆碱脯氨酸/RTILs支撑液膜的CO₂/N₂分离性能

赵彦凯¹, 范腾腾², 谢文龙³, 张所瀛¹, 刘畅¹, 冯新¹, 陆小华¹

1 南京工业大学材料化学工程国家重点实验室, 江苏南京 210009;
2 江苏富淼膜科技有限公司, 江苏苏州 215613;
3 江苏亨通光导新材料有限公司, 江苏苏州 215200

通讯作者: 冯新;刘畅
基金资助:
国家重点基础研究发展计划项目（2013CB733501）；国家自然科学基金项目（21136004，21476106）；江苏省自然科学基金项目（BK20160993）；中国博士后科学基金项目（2016M591837）；江苏高校优势学科建设工程资助项目。

Abstract

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.

Key words: [Choline][Pro], ionic liquids, SILMs, CO₂, separation

摘要：

选用不同种类的室温型离子液体（RTILs）与胆碱脯氨酸离子液体进行混合分别制得[Choline][Pro]/[EMIm][N（CN）₂]、[Choline][Pro]/[bmim][PF₆]以及[Choline][Pro]/[HMIm][NTf₂]混合离子液体，并将其应用于离子液体支撑液膜（SILMs）。考察操作温度、操作压差、RTILs种类和含量对SILMs分离CO₂/N₂性能的影响。结果表明胆碱脯氨酸/RTILs系列SILMs的CO₂通量在343.3～1936.9 barrer之间变化并且CO₂/N₂选择性为10.3～34.8。对CO₂膜过程内在机制探索表明随着[HMIm][NTf₂]离子液体在混合离子液体中比例的增加，总阻力1/K_m会呈现先降低后升高的趋势。与实验现象中随着[HMIm][NTf₂]离子液体在混合离子液体中比例的增加CO₂先升高后降低相符。

关键词: 胆碱脯氨酸, 离子液体, 支撑液膜, 二氧化碳, 分离

CLC Number:

TQ028.8

ZHAO Yankai, FAN Tengteng, XIE Wenlong, ZHANG Suoying, LIU Chang, FENG Xin, LU Xiaohua. CO₂/N₂ separation performance of supported ionic liquid membrane fabricated by [Choline][Pro]/RTILs[J]. CIESC Journal, 2017, 68(7): 2771-2780.

赵彦凯, 范腾腾, 谢文龙, 张所瀛, 刘畅, 冯新, 陆小华. 胆碱脯氨酸/RTILs支撑液膜的CO₂/N₂分离性能[J]. 化工学报, 2017, 68(7): 2771-2780.

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CO₂/N₂ separation performance of supported ionic liquid membrane fabricated by [Choline][Pro]/RTILs

胆碱脯氨酸/RTILs支撑液膜的CO₂/N₂分离性能

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