US 2021/0229029 A1 · SELECTIVELY PERMEABLE GRAPHENE OXIDE MEMBRANE

Abstract

Described herein are crosslinked graphene oxide and polycarboxylic acid based composite membranes that provide selective resistance for gases while providing water vapor permeability. Such composite membranes have a high water/air selectivity in permeability. The methods for making such membranes, and using the membranes for dehydrating or removing water vapor from gases are also described.

Claims27

Dependent claims

A dehydration membrane comprising:

a porous support;
and
a composite coated on the porous support comprising a crosslinked graphene oxide compound,
wherein the crosslinked graphene oxide compound is formed by reacting a mixture comprising a graphene oxide compound and a crosslinker comprising a polycarboxylic acid;
wherein the graphene oxide compound is suspended within the crosslinker and the weight ratio of the graphene oxide compound to the crosslinker is at least 0.01.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/734,498Filed 3 Aug 2018

Priority

8 Jun 2018

Published

29 Jul 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification16 codes

B01D 53/228
By diffusion: characterised by specific membranes
B01D 53/268
Drying gases or vapours: by diffusion
B01D 67/0006
Organic membrane manufacture: by chemical reactions
B01D 69/02
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes…:…

Selectively permeable graphene oxide membrane

Life of this patent

Selectively permeable graphene oxide membrane

Life of this patent

Abstract

Claims27