Thermally stable porous membrane and its manufacturing method
AssigneeKorea University Research and Business Foundation
InventorsJung-Kyu CHOI, Se-Jin KIM
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Abstract
The present disclosure relates to a porous membrane and a method of manufacturing the same, and more particularly, to a thermally stable porous membrane capable of securing thermal stability and long-term stability of gas separation performance at high temperatures, and a manufacturing method thereof. This invention is related to a porous membrane comprising: a first Zeolitic Imidazolate Fragments (ZIFs) part formed on a surface of a porous support; and a second ZIFs part embedded in the porous support, wherein the second ZIFs part is formed in a state in which it penetrates from an interface between the first ZIFs part and the second ZIFs part to a predetermined depth.
Claims23
A porous membrane comprising:
- a first Zeolitic Imidazolate Fragments (ZIFs) part formed on a surface of a porous support;
- and a second ZIFs part embedded in the porous support, wherein the second ZIFs part is formed in a state in which it penetrates from an interface between the first ZIFs part and the second ZIFs part to a predetermined depth.
A manufacturing method of a porous membrane, the method comprising:
- pre-depositing and immobilizing a Zn precursor on a surface and inside of a porous support using a zinc salt solution having a first concentration;
- and
- reacting the porous support on which the Zn precursor has been pre-deposited and immobilized with an imidazole or an imidazole derivative solution,
- wherein a first ZIFs portion is formed on the surface of the porous support, a second ZIFs portion is embedded in the inside of the porous support, and the second ZIFs portion is formed to penetrate from an interface between the first ZIFs portion and the second ZIFs portion by a predetermined depth.
Dependencies are inferred from the claim text.