• 专利标题:   Separation membrane for separating acidic gas from mixed gas, has isolation functional layer containing graphene oxide, ionic liquid having hydrophilic property and polymer.
  • 专利号:   WO2022059368-A1, TW202222415-A, JP2022550402-X, CN116096482-A
  • 发明人:   KAZUYA Y, NAOMICHI K, SHINYA N, YOSHIMURA K, KIMURA N, NISHIYAMA S
  • 专利权人:   NITTO DENKO CORP
  • 国际专利分类:   B01D069/00, B01D069/10, B01D069/12, B01D071/02, B01D071/52, B01D053/00, B01D071/06, B01D071/80
  • 专利详细信息:   WO2022059368-A1 24 Mar 2022 202228 Pages: 38 Japanese
  • 申请详细信息:   WO2022059368-A1 WOJP028681 02 Aug 2021
  • 优先权号:   JP156025, CN80053239

▎ 摘  要

NOVELTY - The membrane (10) has an isolation functional layer (1) containing a graphene oxide, an ionic liquid having hydrophilic property and a polymer. The ionic liquid is comprised of an imidazolium ion and tetrafluoroborate. The content of the ionic liquid in the separation function layer is specific value of weight in percentage or more. The polymer is compatible with each of the graphene oxide and the ionic liquid. A porous support main portion is adapted for supporting the separation function layer. An intermediate layer (2) is arranged between the separating function layer and the porous support (3). The coating liquid is applied to a base material in order to manufacture a separation membrane. USE - Separation membrane for separating acidic gas from mixed gas. ADVANTAGE - The high separation from gas mixture is achieved. The acidic gas is separated efficiently and the operation cost is reduced. The separation performance of separation membrane with respect to mixed gas containing an acidic gas is improved. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) the method for producing separation membrane; and (2) a coating fluid for producing separation membrane. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a structure of a separation membrane. Isolation functional layer (1) Intermediate layer (2) Porous substrate (3) Separation membrane (10) Main surface (11,12)