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Title: Membrane separation of ionic liquid solutions

A membrane separation process using a highly fluorinated polymer membrane that selectively permeates water of an aqueous ionic liquid solution to provide dry ionic liquid. Preferably the polymer is a polymer that includes polymerized perfluoro-2,2-dimethyl-1,3-dioxole (PDD). The process is also capable of removing small molecular compounds such as organic solvents that can be present in the solution. This membrane separation process is suitable for drying the aqueous ionic liquid byproduct from precipitating solutions of biomass dissolved in ionic liquid, and is thus instrumental to providing usable lignocellulosic products for energy consumption and other industrial uses in an environmentally benign manner.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1213526
Assignee:
CMS Technologies Holdings, Inc. (Newport, DE) DOESC
Patent Number(s):
9,120,834
Application Number:
14/527,732
Contract Number:
SC0011293
Resource Relation:
Patent File Date: 2014 Oct 29
Research Org:
CMS Technologies Holdings, Inc., Newport, DE (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS

Other works cited in this record:

Complete dissolution and partial delignification of wood in the ionic liquid 1-ethyl-3-methylimidazolium acetate
journal, January 2009
  • Sun, Ning; Rahman, Mustafizur; Qin, Ying
  • Green Chemistry, Vol. 11, Issue 5, 646-655
  • DOI: 10.1039/B822702K

Pervaporation recovery of [AMIM]Cl during wood dissolution; effect of [AMIM]Cl properties on the membrane performance
journal, October 2013

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