×

Sorbents for carbon dioxide reduction from indoor air

  • US 9,533,250 B2
  • Filed: 05/17/2012
  • Issued: 01/03/2017
  • Est. Priority Date: 08/23/2011
  • Status: Active Grant
First Claim
Patent Images

1. A sorbent for reduction of CO2 from air of an enclosed space, comprising:

  • a support comprising a plurality of solid particles having an average diameter dimension in the range of 0.1-10 millimeters; and

    an amine-based compound, wherein at least 25% of amine functional groups are secondary amines, being supported by the support,wherein the amine-based compound comprises a polyamine having between 25%-75% of secondary amines,wherein the support is impregnated with a solution of the amine-based compound, wherein the solution of the amine-based compound comprises water; and

    wherein the amine-based compound is configured to capture at least some of the CO2 within the indoor air of the enclosed space and release at least a portion of the captured CO2 by streaming outdoor air through the sorbent.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×