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CO 2 absorbent and method for CO 2 capture

  • US 8,454,726 B2
  • Filed: 02/26/2009
  • Issued: 06/04/2013
  • Est. Priority Date: 02/28/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • removing CO2 from a gas phase, wherein the gas phase is brought in contact with an aqueous suspension of super-paramagnetic particles made of a cross-bounded, porous polymer substrate, having CO2 absorbing functional nucleophilic groups grafted on a particle surface, where an absorbent is concentrated by magnetic separation of water and particles, and where the absorbent thereafter is regenerated by heating to release CO2 that is withdrawn and treated further for export from a plant.

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