US 12,458,920 B2
Compositions and methods for carbon dioxide capture
Yongqi Lu, Urbana, IL (US); Yang Du, Champaign, IL (US); and Qing Ye, Urbana, IL (US)
Assigned to The Board of Trustees of the University of Illinois, Urbana, IL (US)
Filed by The Board of Trustees of the University of Illinois, Urbana, IL (US)
Filed on Jul. 27, 2022, as Appl. No. 17/815,394.
Application 17/815,394 is a division of application No. 16/374,471, filed on Apr. 3, 2019, granted, now 11,400,410.
Claims priority of provisional application 62/814,146, filed on Mar. 5, 2019.
Claims priority of provisional application 62/663,483, filed on Apr. 27, 2018.
Prior Publication US 2022/0387926 A1, Dec. 8, 2022
Int. Cl. B01D 53/14 (2006.01); B01D 53/62 (2006.01); B01D 53/78 (2006.01); B01D 53/96 (2006.01); C07C 211/03 (2006.01); C07C 211/06 (2006.01); C07C 211/11 (2006.01); C07C 211/13 (2006.01); C07C 211/17 (2006.01); C07D 213/16 (2006.01); C07D 221/00 (2006.01); C07D 223/04 (2006.01); C07D 235/00 (2006.01); C07D 241/04 (2006.01); C07D 265/30 (2006.01)
CPC B01D 53/1493 (2013.01) [B01D 53/1425 (2013.01); B01D 53/1475 (2013.01); B01D 53/62 (2013.01); B01D 53/78 (2013.01); B01D 53/96 (2013.01); C07C 211/03 (2013.01); C07C 211/06 (2013.01); C07C 211/11 (2013.01); C07C 211/13 (2013.01); C07C 211/17 (2013.01); C07D 213/16 (2013.01); C07D 221/00 (2013.01); C07D 223/04 (2013.01); C07D 235/00 (2013.01); C07D 241/04 (2013.01); C07D 265/30 (2013.01); B01D 2252/20405 (2013.01); B01D 2252/2041 (2013.01); B01D 2252/20415 (2013.01); B01D 2252/20421 (2013.01); B01D 2252/20426 (2013.01); B01D 2252/20431 (2013.01); B01D 2252/20442 (2013.01); B01D 2252/20447 (2013.01); B01D 2252/20473 (2013.01); B01D 2252/20484 (2013.01); B01D 2252/504 (2013.01); B01D 2257/504 (2013.01); B01D 2258/0283 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A biphasic composition comprising:
a) at least one carbamate compound comprising a carbamate moiety of a primary amine or a secondary amine;
b) a Brønsted base wherein the Brønsted base is in the form of its conjugate acid, wherein the Brønsted base does not form a carbamate moiety with carbon dioxide;
c) about 5% to about 50% by weight of a water-soluble organic solvent, wherein the organic solvent comprises a glyme; and
d) about 5% to about 40% by weight of water;
wherein the biphasic composition has a CO2-rich phase and a CO2-lean phase;
wherein the rich phase comprises the highest % weight of water, the highest % weight of the carbamate compound, and the highest % weight of the conjugate acid; and the lean phase comprises the highest % weight of the organic solvent.