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Title: Membrane separation of ionic liquid solutions

Abstract

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:
Research Org.:
CMS Technologies Holdings, Inc., Newport, DE (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1213526
Patent Number(s):
9120834
Application Number:
14/527,732
Assignee:
CMS Technologies Holdings, Inc. (Newport, DE)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
DOE Contract Number:  
SC0011293
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Oct 29
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS

Citation Formats

Campos, Daniel, Feiring, Andrew Edward, Majumdar, Sudipto, and Nemser, Stuart. Membrane separation of ionic liquid solutions. United States: N. p., 2015. Web.
Campos, Daniel, Feiring, Andrew Edward, Majumdar, Sudipto, & Nemser, Stuart. Membrane separation of ionic liquid solutions. United States.
Campos, Daniel, Feiring, Andrew Edward, Majumdar, Sudipto, and Nemser, Stuart. Tue . "Membrane separation of ionic liquid solutions". United States. https://www.osti.gov/servlets/purl/1213526.
@article{osti_1213526,
title = {Membrane separation of ionic liquid solutions},
author = {Campos, Daniel and Feiring, Andrew Edward and Majumdar, Sudipto and Nemser, Stuart},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {9}
}

Works referenced in this record:

Polymers of dioxolanes
patent, January 1986


Perfluorodioxole membranes
patent, September 1991


Direct carbonylation of paraffins using an ionic liquid catalyst
patent, September 2001


Gas separation using C3+ hydrocarbon-resistant membranes
patent, March 2002


Dissolution and processing of cellulose using ionic liquids
patent, November 2004


Removal of water and methanol from fluids
patent, October 2012


Removal of water from fluids
patent, August 2013


Separations with Highly Selective Fluoropolymer Membranes
patent-application, November 2011


Ionic Liquid Recovery and Purification in Biomass Treatment Processes
patent-application, November 2013


Sugar Extraction and Ionic Liquid Recycling Using Alkaline Solutions
patent-application, May 2015


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