• 专利标题:   Membrane used for separating gas such as carbon dioxide, hydrogen sulfide and hydrogen chloride from feed gas stream, comprises base, support layer comprising gas permeable polymer and having carbon dioxide permeance and selective polymer layer comprising selective polymer matrix.
  • 专利号:   WO2021236221-A1, US2023182086-A1
  • 发明人:   HO W S W, PANG R, CHEN T
  • 专利权人:   OHIO STATE INNOVATION FOUND, OHIO STATE INNOVATION FOUND
  • 国际专利分类:   B01D069/14, B01D067/00, B01D071/02, B01D071/60, B01D053/22, B01D069/02, B01D069/12
  • 专利详细信息:   WO2021236221-A1 25 Nov 2021 B01D-069/14 202101 Pages: 80 English
  • 申请详细信息:   WO2021236221-A1 WOUS023034 18 Mar 2021
  • 优先权号:   US026628P, US17926473

▎ 摘  要

NOVELTY - A membrane comprises a base, a support layer comprising a gas permeable polymer arranged on the base, and a selective polymer layer arranged on the support layer. The selective polymer layer comprises a selective polymer matrix. The support layer has carbon dioxide permeance of at least 25000 GPU at 57 degrees C and ambient pressure. USE - Membrane used for separating gas such as carbon dioxide, hydrogen sulfide and hydrogen chloride from feed gas stream (all claimed). ADVANTAGE - The membrane is selectively permeable to acidic gas and has excellent carbon dioxide and nitrogen selectivity and high performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of the membrane, which involves depositing the support layer on a base and depositing a selective polymer layer on the support layer. The selective polymer layer comprises a selective polymer matrix. The support layer, comprises a gas permeable polymer, hydrophilic additive, solvent, and pore forming agent; and (2) separating of gas (G1) from a feed gas stream, which involves contacting the membrane with the feed gas stream comprising the gas (G1) under conditions effective to afford transmembrane permeation of the gas.