Journal
JOURNAL OF MEMBRANE SCIENCE
Volume 354, Issue 1-2, Pages 63-67Publisher
ELSEVIER
DOI: 10.1016/j.memsci.2010.02.062
Keywords
Ionic liquids; Membranes; Acetylene; Facilitated transport
Categories
Funding
- Energy Technology Innovation (ETI)
- Ministry of Science and Technology of Korean government [AC3-101]
- Korea Institute of Industrial Technology(KITECH) [2007-E-ID24-P-03, 2007-E-ID24-P-03-0-000] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵06A3002, 16-2008-24-001-00] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Pyrrolidinium-based ionic liquids with a basic anion were shown to be highly effective acetylene transport carriers for the selective separation of acetylene in ethylene through membranes. The selectivity of acetylene over ethylene varied significantly depending on the type of the anion of the pyrrolidinium-based ionic liquids. The highest selectivity of 23 was attained when N,N-dimethylpyrrolidinium methylphosphite ([DMPyrr][MeHPO3]) was used as the transport carrier. Computational calculation and H-1 NMR results on the interactions of acetylene and ethylene with [DMPyri][MeHPO3] clearly indicate that the higher selectivity of acetylene over ethylene is originated from the specific acid-base interaction between methylphosphite anion, [MeHPO3](-) and the acidic hydrogen atom(s) of acetylene. (C) 2010 Elsevier B.V. All rights reserved.
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