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Title: Switchable solvents and methods of use thereof

Abstract

A solvent that reversibly converts from a nonionic liquid mixture to an ionic liquid upon contact with a selected trigger, e.g., contact with CO.sub.2, is described. In preferred embodiments, the ionic solvent is readily converted back to the nonionic liquid mixture. The nonionic liquid mixture includes an amidine or guanidine or both, and water, alcohol, or a combination thereof. Single component amine solvents that reversibly convert between ionic and non-ionic states are also described. Some embodiments require increased pressure to convert; others convert at 1 atmosphere.

Inventors:
 [1];  [2];  [2];  [3]
  1. Kingston, CA
  2. Atlanta, GA
  3. Richland, WA
Issue Date:
Research Org.:
Univ. of California (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1019418
Patent Number(s):
7982069
Application Number:
US Patent Application 11/717,172
Assignee:
Queen's University at Kingston (Kingston, CA); Georgia Tech Research Corporation (Atlanta, GA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07B - GENERAL METHODS OF ORGANIC CHEMISTRY
DOE Contract Number:  
FG02-99ER14986
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Jessop, Philip G, Eckert, Charles A, Liotta, Charles L, and Heldebrant, David J. Switchable solvents and methods of use thereof. United States: N. p., 2011. Web.
Jessop, Philip G, Eckert, Charles A, Liotta, Charles L, & Heldebrant, David J. Switchable solvents and methods of use thereof. United States.
Jessop, Philip G, Eckert, Charles A, Liotta, Charles L, and Heldebrant, David J. Tue . "Switchable solvents and methods of use thereof". United States. https://www.osti.gov/servlets/purl/1019418.
@article{osti_1019418,
title = {Switchable solvents and methods of use thereof},
author = {Jessop, Philip G and Eckert, Charles A and Liotta, Charles L and Heldebrant, David J},
abstractNote = {A solvent that reversibly converts from a nonionic liquid mixture to an ionic liquid upon contact with a selected trigger, e.g., contact with CO.sub.2, is described. In preferred embodiments, the ionic solvent is readily converted back to the nonionic liquid mixture. The nonionic liquid mixture includes an amidine or guanidine or both, and water, alcohol, or a combination thereof. Single component amine solvents that reversibly convert between ionic and non-ionic states are also described. Some embodiments require increased pressure to convert; others convert at 1 atmosphere.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {7}
}

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Works referenced in this record:

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Switchable Surfactants
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