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Title: Capture and release of acid-gasses with acid-gas binding organic compounds

A system and method for acid-gas capture wherein organic acid-gas capture materials form hetero-atom analogs of alkyl-carbonate when contacted with an acid gas. These organic-acid gas capture materials include combinations of a weak acid and a base, or zwitterionic liquids. This invention allows for reversible acid-gas binding to these organic binding materials thus allowing for the capture and release of one or more acid gases. These acid-gas binding organic compounds can be regenerated to release the captured acid gasses and enable these organic acid-gas binding materials to be reused. This enables transport of the liquid capture compounds and the release of the acid gases from the organic liquid with significant energy savings compared to current aqueous systems.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1172759
Assignee:
Battelle Memorial Institute (Richland, WA) PNNL
Patent Number(s):
8,980,210
Application Number:
12/427,851
Contract Number:
AC05-76RL01830
Resource Relation:
Patent File Date: 2009 Apr 22
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (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:

Green chemistry: Reversible nonpolar-to-polar solvent
journal, August 2005
  • Jessop, Philip G.; Heldebrant, David J.; Li, Xiaowang
  • Nature, Vol. 436, Issue 7054, p. 1102-1102
  • DOI: 10.1038/4361102a

Tuning ionic liquids for high gas solubility and reversible gas sorption
journal, January 2008
  • Huang, Jun; Riisager, Anders; Berg, Rolf W.
  • Journal of Molecular Catalysis A: Chemical, Vol. 279, Issue 2, p. 170-176
  • DOI: 10.1016/j.molcata.2007.07.036

Desulfurization of Flue Gas: SO2 Absorption by an Ionic Liquid
journal, April 2004
  • Wu, Weize; Han, Buxing; Gao, Haixiang
  • Angewandte Chemie International Edition, Vol. 43, Issue 18, p. 2415-2417
  • DOI: 10.1002/anie.200353437

CO2 -binding organic liquids (CO2 BOLs) for post-combustion CO2 capture
journal, February 2009
  • Heldebrant, David J.; Yonker, Clement R.; Jessop, Philip G.
  • Energy Procedia, Vol. 1, Issue 1, p. 1187-1195
  • DOI: 10.1016/j.egypro.2009.01.156

Reversible Uptake of COS, CS2, and SO2: Ionic Liquids with O-Alkylxanthate, O-Alkylthiocarbonyl, and O-Alkylsulfite Anions
journal, August 2009
  • Heldebrant, David J.; Yonker, Clement R.; Jessop, Philip G.
  • Chemistry - A European Journal, Vol. 15, Issue 31, p. 7619-7627
  • DOI: 10.1002/chem.200802602

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