The Effect of Microporous Polymeric Support Modification on Surface and Gas Transport Properties of Supported Ionic Liquid Membranes

Membranes

Alsu A. Akhmetshina²  Ilsiya M. Davletbaeva²  Ekaterina S. Grebenschikova⁴  Tatyana S. Sazanova²  Anton N. Petukhov²  Artem A. Atlaskin²  Evgeny N. Razov¹  Ilnaz I. Zaripov⁵  Carla F. Martins³  Luísa A. Neves³  Ilya V. Vorotyntsev²  Alberto Figoli⁶ 

[1] Institute for Problems in Mechanical Engineering, Russian Academy of Sciences, 85 Belinskogo str., Nizhny Novgorod 603024, Russia;Nizhny Novgorod State Technical University n.a. R.E. Alekseev, 24 Minina str., Nizhny Novgorod 603950, Russia;LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal;Kazan Federal University, 18 Kremlyovskaya St., Kazan 420008, Russia;Kazan National Research Technological University, 68 Karl Marks str, Kazan 420015, Russia;;Nizhny Novgorod State Technical University n.a. R.E. Alekseev, 24 Minina str., Nizhny Novgorod 603950, Russia

关键词: microporous polymers;    modification;    ionic liquid;    supported liquid membrane;    SILMs;    gas separation;   

DOI  :  10.3390/membranes6010004

来源: mdpi

【 摘 要 】

Microporous polymers based on anionic macroinitiator and toluene 2,4-diisocyanate were used as a support for 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF₆]) and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf₂N]) immobilization. The polymeric support was modified by using silica particles associated in oligomeric media, and the influence of the modifier used on the polymeric structure was studied. The supported ionic liquid membranes (SILMs) were tested for He, N₂, NH₃, H₂S, and CO₂ gas separation and ideal selectivities were calculated. The high values of ideal selectivity for ammonia-based systems with permanent gases were observed on polymer matrixes immobilized with [bmim][PF₆] and [emim][Tf₂N]. The modification of SILMs by nanosize silica particles leads to an increase of NH₃ separation relatively to CO₂ or H₂S.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.