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Title: Ionic liquids for separation of olefin-paraffin mixtures

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.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1144974
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORNL
Patent Number(s):
8,778,219
Application Number:
13/969,717
Contract Number:
AC05-00OR22725
Research Org:
ORNL (Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States))
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Other works cited in this record:

Defining the challenges for C3H6/C3H8 separation using polymeric membranes
journal, January 2003

Novel perfluorinated ionomers and ionenes
journal, June 1995

The use of ionic liquids as efficient extraction medium in the reactive separation of cycloolefins from cyclohexane
journal, November 2009
  • Gorri, Daniel; Ruiz, Alicia; Ortiz, Alfredo
  • Chemical Engineering Journal, Vol. 154, Issue 1-3, p. 241-245
  • DOI: 10.1016/j.cej.2009.01.049

Perfectly Staggered and Twisted Difluoromethylene Groups in Perfluoroalkyl Chains: Structure of M[C4F9SO2NSO2C4F9](M= Na, K)
journal, July 1997
  • Xue, Lixin; DesMarteau, Darryl D.; Pennington, William T.
  • Angewandte Chemie International Edition in English, Vol. 36, Issue 12, p. 1331-1333
  • DOI: 10.1002/anie.199713311

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