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Highly Selective Transport of Organic Compounds by Using Supported Liquid Membranes Based on Ionic Liquids
Author(s) -
Branco Luís C.,
Crespo João G.,
Afonso Carlos A. M.
Publication year - 2002
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/1521-3773(20020802)41:15<2771::aid-anie2771>3.0.co;2-u
Subject(s) - ionic liquid , membrane , chemistry , ionic bonding , chemical engineering , organic chemistry , ion , catalysis , biochemistry , engineering
Continuous separation of organic compounds is possible by selective transport through a supported liquid membrane, which contains the room‐temperature ionic liquid 1‐ n ‐butyl‐3‐methylimidazolium hexafluorophosphate immobilized in the porous structure of a hydrophilic polyvinylidene fluoride membrane. A mixture (1:1 molar ratio) of the isomeric amines diisopropylamine (S 1 ) and triethylamine (S 2 ) was continuously fractionated over 14 days without any observable decrease in selectivity (see scheme).