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US 2025/0018374 A1Published application
Regeneration of degraded amino-sorbents for carbon capture
AssigneeClimeworks AG
InventorsAngelo VARGAS, Davide ALBANI, Claudio LIMONE
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Abstract
The invention describes a method to regenerate the carbon capture capacity of amino based sorbents used for carbon capture, after they have lost partially or totally their carbon dioxide capture capacity due to oxidation during said carbon capture process.
Claims25
Method for the regeneration of sorbent material having been used as adsorbent for carbon dioxide separation from a gas mixture,
- said sorbent material comprising primary amine or secondary amine moieties, or a combination thereof, immobilised on a solid support, and wherein at least part of the amine moieties due to the use of the sorbent material for carbon dioxide separation have been oxidized to amide moieties essentially not participating in the carbon dioxide separation process anymore,
- wherein said amide moieties are chemically regenerated to primary and/or secondary amine moieties or mixture thereof.
Dependencies are inferred from the claim text.