Ionic liquids for separation of olefin-paraffin mixtures

Dai, Sheng; Luo, Huimin; Huang, Jing-Fang

Title: Ionic liquids for separation of olefin-paraffin mixtures

Patent · Tue Jul 15 00:00:00 EDT 2014

OSTI ID:1144974

Dai, Sheng; Luo, Huimin; Huang, Jing-Fang

The invention is directed to an ionic liquid comprising (i) a cationic portion containing a complex of a silver (I) ion and one or more neutral ligands selected from organoamides, organoamines, olefins, and organonitriles, and (ii) an anionic portion having the chemical formula ##STR00001## wherein m and n are independently 0 or an integer of 1 or above, and p is 0 or 1, provided that when p is 0, the group --N--SO.sub.2--(CF.sub.2).sub.nCF.sub.3 subtended by p is replaced with an oxide atom connected to the shown sulfur atom. The invention is also directed to a method for separating an olefin from an olefin-paraffin mixture by passing the mixture through a layer of the ionic liquid described above.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Number(s):: 8,778,219

Application Number:: 13/969,717

OSTI ID:: 1144974

Country of Publication:: United States

Language:: English

References (13)

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Process for the separation of olefins and paraffins Jong, Feike De; With, Jan De https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20050154247 US Patent Application 11/017491; 20050154247	patent-application	July 2005
Lubricants of Lubricant Additives Composed of Ionic Liquid Containing Ammonium Cations Qu, Jun; Truhan, John J.; Dai, Sheng https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20080070817 US Patent Application 11/533098; 20080070817	patent-application	March 2008
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Advanced Liquid Membranes Based on Novel Ionic Liquids for Selective Separation of Olefin/Paraffin via Olefin-Facilitated Transport Huang, Jing-Fang; Luo, Huimin; Liang, Chengdu Industrial & Engineering Chemistry Research, Vol. 47, Issue 3 https://doi.org/10.1021/ie0707523	journal	February 2008
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Perfectly Staggered and Twisted Difluoromethylene Groups in Perfluoroalkyl Chains: Structure of M[C₄F₉SO₂NSO₂C₄F₉](M= Na, K) Xue, Lixin; DesMarteau, Darryl D.; Pennington, William T. Angewandte Chemie International Edition in English, Vol. 36, Issue 12, p. 1331-1333 https://doi.org/10.1002/anie.199713311	journal	July 1997

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