Issue 8, 2010
From the journal:

Physical Chemistry Chemical Physics

Selective removal of acetylenes from olefin mixtures through specific physicochemical interactions of ionic liquids with acetylenes†

Jung Min Lee,a   Jelliarko Palgunadi,a   Jin Hyung Kim,a   Srun Jung,a   Young-seop Choi,a   Minserk Cheong*a  and  Hoon Sik Kim*a  

* Corresponding authors

a Department of Chemistry and Research Institute of Basic Science, Kyung Hee University, 1 Hoegi-dong, Dongdaemoon-gu, Seoul 130-701, Rep. of Korea
E-mail: khs2004@khu.ac.kr, mcheong@khu.ac.kr
Fax: +82 (0)2 966 3701
Tel: +82 (0)2 961 0432

Abstract

Imidazolium-based ionic liquids (ILs) bearing an alkylphosphite anion, were highly efficient for the selective removal of acetylenes in olefins. Comparison of solubility data at 313 K and at atmospheric pressure shows that the solubilities of acetylene and propyne in 1,3-dimethylimidazolium methylphosphite ([DMIM][MeHPO3]) are about 45 and 20 times higher than those of ethylene and propylene, respectively. Computational and 1H NMR results clearly demonstrate that there are substantial interactions between the acidic hydrogen atom or atoms of acetylenes and the phosphite anion.

Graphical abstract: Selective removal of acetylenes from olefin mixtures through specific physicochemical interactions of ionic liquids with acetylenes

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Article information

DOI
https://doi.org/10.1039/B915989D
Article type
Paper
Submitted
04 Aug 2009
Accepted
06 Oct 2009
First published
07 Nov 2009

Phys. Chem. Chem. Phys., 2010,12, 1812-1816

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Selective removal of acetylenes from olefin mixtures through specific physicochemical interactions of ionic liquids with acetylenes

J. M. Lee, J. Palgunadi, J. H. Kim, S. Jung, Y. Choi, M. Cheong and H. S. Kim, Phys. Chem. Chem. Phys., 2010, 12, 1812 DOI: 10.1039/B915989D

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