New Arrangement of Dynamic Permeation Method for Determination of Gas Separation Ability of Ionic Liquids

0445715 - ÚCHP 2016 RIV NL eng J - Journal Article
Řezníčková Čermáková, Jiřina - Suen, S.-Y. - Petričkovič, Roman - Setničková, Kateřina - Luo, Y.-M. - Wagner, Zdeněk - Uchytil, Petr
New Arrangement of Dynamic Permeation Method for Determination of Gas Separation Ability of Ionic Liquids.
Separation and Purification Technology. Roč. 147, JUN 16 (2015), s. 1-8. ISSN 1383-5866. E-ISSN 1873-3794
R&D Projects: GA ČR GA104/09/1165
Grant - others:AV ČR(CZ) MOST-15-05
Program: Bilaterální spolupráce
Institutional support: RVO:67985858
Keywords : dynamic permeation method * ionic liquid * support arrangement
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
Impact factor: 3.299, year: 2015

A new arrangement of dynamic permeation apparatus was developed for testing gas transport properties of ionic liquids. This arrangement enables to measure not only the transport of pure gases but also that of gas mixtures. Three ionic liquids (ILs), 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]), 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]), and 1- hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), were selected for testing the new arrangement of dynamic permeation apparatus for determination of separation of binary CO2/CH4 mixture. A compact IL layer with thickness of around 1 mm was created on the surface of a dense support layer from polydimethylsiloxane (PDMS). Permeation experiments of binary mixture with the composition close to equimolar (51 mol% CO2 and 49 mol% CH4) were performed using a semi-open cell under dynamic pressure conditions at 25 C. A constant pressure of binary mixture CO2 and CH4 at the feed side was maintained, while vacuum was set at the permeate side at the beginning of the experiment.
Permanent Link: http://hdl.handle.net/11104/0247792