Patent ID: 8932478
Filing Date: 2015-01-13
Classification: B01D,C09K

Abstract:
1. A process for the absorption of a volatile substance from a gas phase in a liquid absorbent, comprising bringing said gas phase into contact with a film of said absorbent, wherein said absorbent comprises: a) an ionic liquid; and b) a wetting-promoting additive, wherein said wetting-promoting additive is a zwitterionic surfactant or a nonionic surfactant selected from the group consisting of: alkylamine alkoxylates, amidoamines, alkanolamides, alkylphosphine oxides, alkyl-N-glucamides, alkyl glucosides, bile acids, alkyl alkoxylates, sorbitan esters, sorbitan ester ethoxylates, fatty acid ethoxylates, ester ethoxylates and polyether siloxanes.