Gas separation membranes
AssigneeNorwegian University of Science and Technology (Ntnu)
InventorsLiyuan Deng, Saravanan Janakiram, Luca Ansaloni
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Abstract
A composite membrane suitable for separating a gas from a gas mixture comprising a selective layer coated on a support, wherein said selective layer comprises: a) a polymeric matrix comprising an amine polymer; b) a graphene oxide nanofiller; and c) a mobile carrier selected from an ionic liquid or an amino acid salt.
Claims20
A composite membrane suitable for separating a gas from a gas mixture comprising a selective layer coated on a support, wherein said selective layer comprises:
- a) a polymeric matrix comprising an amine polymer;
- b) a graphene oxide nanofiller having an average lateral dimension of 1000 nm or less;
- and
- c) a mobile carrier selected from an ionic liquid or an amino acid salt;
- wherein the amount of graphene oxide nanofiller in the selective layer is 1 wt % or less.
A composite membrane suitable for separating a gas from a gas mixture comprising a selective layer coated on a hollow fiber or flat sheet support, wherein said selective layer comprises:
- a) a polymeric matrix comprising an amine polymer;
- b) a porous graphene oxide nanofiller or PEG-modified graphene oxide nanofiller, and optionally
- c) a mobile carrier selected from an ionic liquid or an amino acid salt;
- wherein said porous graphene oxide nanofiller or PEG-modified graphene oxide nanofiller has an average lateral dimension of 1000 nm or less and is present in an amount of 1 wt % or less of the selective layer.
A composite membrane suitable for separating a gas from a gas mixture comprising a selective layer coated on a support, wherein said selective layer comprises:
- a) a polymeric matrix comprising an amine polymer;
- b) a porous graphene oxide nanofiller or chemically-modified graphene oxide nanofiller, optionally wherein the chemically-modified graphene oxide nanofiller is graphene oxide with an organic unit grafted thereon, optionally wherein said organic unit is selected from a nitrogen and/or oxygen-containing organic unit, a polymer, or a nitrogen-and/or oxygen-containing polymer, and optionally
- c) a mobile carrier selected from an ionic liquid or an amino acid salt;
- wherein said porous graphene oxide nanofiller or chemically-modified graphene oxide nanofiller has an average lateral dimension of 1000 nm or less and is present in an amount of 1 wt % or less of the selective layer.
Dependencies are inferred from the claim text.