Title:
ION LIQUID COMPOSITION FOR CARBON DIOXIDE SEPARATION MEMBRANE, CARBON DIOXIDE SEPARATION MEMBRANE HOLDING THE COMPOSITION AND CARBON DIOXIDE CONCENTRATOR WITH THE CARBON DIOXIDE SEPARATION MEMBRANE
Document Type and Number:
Japanese Patent JP2023030786
Kind Code:
A
Abstract:
To provide an ion liquid composition for a carbon dioxide separation membrane usable for the carbon dioxide separation at high partial pressure to low partial pressure, especially 1 kPa or lower, the carbon dioxide separation membrane holding the composition and a carbon dioxide concentrator with the carbon dioxide separation membrane.SOLUTION: The CO2 permeability and CO2 selectivity of a carbon dioxide separation membrane can be improved by using an ion liquid composition where an ion liquid (I) in which cation is aminium having one or more primary or secondary amino groups and ethylene diamine or propylene diamine skeleton and anion is one or more selected from among methane sulfonate, trifluoromethane sulfonate, nitrate, chloride and acetate and an ion liquid (II) in which cation has no primary and secondary amino groups and anion is oxo acid anion, are combined and carbon dioxide having high partial pressure to low partial pressure of 1 kPa or lower can be selectively separated and recovered.SELECTED DRAWING: Figure 2
Inventors:
MAKINO TAKASHI
KONO TAKEKI
IWATANI MASAO
YAMATO HIROSHI
KONO TAKEKI
IWATANI MASAO
YAMATO HIROSHI
Application Number:
JP2021136106A
Publication Date:
March 08, 2023
Filing Date:
August 24, 2021
Export Citation:
Assignee:
AIST
DAICEL CORP
DAICEL CORP
International Classes:
B01D61/38; B01D53/22; B01D69/00; B01D71/02; B01D71/06; C07C53/10; C07C59/125; C07C215/14; C07C309/04; C07C311/48
Attorney, Agent or Firm:
Yasuko Eto
Junko Yoshimizu
Satoru Matsumoto
Masaki Okui
Satoru Aida
Junko Yoshimizu
Satoru Matsumoto
Masaki Okui
Satoru Aida