• 专利标题:   Membrane used in filter media, comprises preset amount of crosslinked graphene oxide sheets with preset thickness.
  • 专利号:   WO2017197205-A1, US2017341034-A1, CA3022311-A1, CN109070018-A, IN201817039591-A, EP3454979-A1
  • 发明人:   DAVE S H, GROSSMAN J C, HAN G D, KELLER B
  • 专利权人:   MASSACHUSETTS INST TECHNOLOGY, MASSACHUSETTS INST TECHNOLOGY, MASSACHUSETTS INST TECHNOLOGY
  • 国际专利分类:   B01D071/02, B32B003/26, B32B009/00, C02F001/44, C01B032/198
  • 专利详细信息:   WO2017197205-A1 16 Nov 2017 B01D-071/02 201779 Pages: 84 English
  • 申请详细信息:   WO2017197205-A1 WOUS032297 11 May 2017
  • 优先权号:   US334567P, US593298, CA3022311, CN80028491

▎ 摘  要

NOVELTY - A membrane (52) comprises greater than or equal to 70 wt.% crosslinked graphene oxide sheets (50) and has a thickness of greater than or equal to 0.2 microns. USE - Membranes used in article and filter media (claimed) used for ultrafiltration and nanofiltration applications. Uses include but are not limited to concentration of molecules such as whey, lactose, desalting of lactose, dye, chemicals and pharmaceuticals, fractionation of sugars, extraction of nutraceuticals and plant oils, recovery of black liquor, catalyst and solvent, and purification of pharmaceutical, chemical and fuel. ADVANTAGE - The membranes has improved separation efficiency, enhanced resistance to fouling, high permeability, compatibility, physical stability and lifespan. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) filter media; (2) method of converting graphene oxide sheet; (3) method of forming membrane; and (4) article. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic of a graphene oxide membrane under various conditions. Graphene oxide sheets (50) Membrane (52) Crosslinked membrane (54) D-spacing (58,60)