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. 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. 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:

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/Km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: