Back to results
US 2022/0339619 A1Published application
Method for Desorbing Carbon Dioxide from Polymeric Organic Anion Exchangers
AssigneeLANXESS Deutschland GmbH
InventorsChristian Ochsmann, Stefan Neumann
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for desorbing carbon dioxide from polymeric organic anion exchangers having primary and/or secondary amine groups, to which the carbon dioxide is bound in the form of carbamate, by means of heating through microwave radiation.
Claims15
A process comprising desorbing carbon dioxide from at least one anion exchanger comprising polystyrene copolymers having functional groups of the formula (I)
- where represents a polystyrene copolymer scaffold and
- R1 may be C1 to C6 alkyl and/or H and the methylene group in the formula (I) that is attached to the nitrogen atom is attached to an aromatic moiety in the polystyrene copolymer, wherein said desorbing comprises increasing the temperature by means of microwave radiation and optionally by reducing the pressure.
The process the desorbing is carried out at pressures of from 10−3 mbar to standard pressure.
Dependencies are inferred from the claim text.