The Separation of CO2 with Ionic Liquid Membrane and Its Permeability Quantification

• Main Authors: You-Han Chang, 張祐漢
• Other Authors: 張厚謙
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/60395129938014162016

碩士 === 國立中興大學 === 化學工程學系所 === 101 === In this research, five simple permeation models were developed, attempting to describe the separation of carbon dioxide in mathematical point of view. Furthermore, the quantification of the physicochemical factors in the mechanism is feasible. Three kinds ionic liquid membrane, 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([Hmim][Tf2N])、1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4])、1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([Emim][Tf2N]), using polyethersulfone (PES)/montmorillonite (MMT) composite membranes as a support in sandwich form for CO2 and CH4 separation. The analytical model was employed to determine the gas permeation coefficient by curve-fitting experiment data with the results from the models proposed in this work. The permeability of carbon dioxide of three ionic liquid were about 3.12-4.36 barrer, and the permeability of methane were about 0.085-0.17 barrer. Both are validated with previously reported data (Liang, 2011) and discussed.The results consistently show high selectivity and low permeability. This model successfully provides a convenient method for permeability quantification.