• 专利标题:   Vapor permeation device comprises graphene oxide membrane, which is configured to separate permeation stream comprising water from feed vapor stream comprising water and organic solvent.
  • 专利号:   WO2023044641-A1
  • 发明人:   LI K, LEE B
  • 专利权人:   SHANGHAI TETRELS MATERIAL TECHNOLOGY CO
  • 国际专利分类:   B01D067/00, B01D071/00, C01B032/192
  • 专利详细信息:   WO2023044641-A1 30 Mar 2023 B01D-067/00 202332 Pages: 49 English
  • 申请详细信息:   WO2023044641-A1 WOCN119779 23 Sep 2021
  • 优先权号:   WOCN119779

▎ 摘  要

NOVELTY - Vapor permeation device comprises a graphene oxide membrane, where the graphene oxide membrane is configured to separate a permeation stream comprising water from a feed vapor stream comprising water and an organic solvent, and the graphene oxide membrane has a separation factor of at least 100 and a water flux rate of at least 1000 g.m-2.hours-1. The graphene oxide membrane comprises permeation defects. The permeation defects comprise hydrophilic sites on edges of the permeation defects. The hydrophilic sites comprise molecules with hydrophilic functional groups. The graphene oxide membrane has a density of permeation defects less than 5%, preferably less than 1%. USE - As vapor permeation device. ADVANTAGE - The vapor permeation device has ease of fabrication, excellent mechanical strength, chemical stability, and flexibility, even for submicron-thick films. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) (1) a method for vapor permeation; and (2) (2) a method for preparing a graphene oxide membrane.