Cooling/heating method and device based on metal-organic frameworks and induced by pressure modifications
US-2024336821-A1 · Oct 10, 2024 · US
Metal-organic frameworks-polymer fiber-based adsorbent forming a core-shell structure and its manufacturing method, and rare earth metal recovery method
US2025153136A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025153136-A1 |
| Application number | US-202418615762-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 25, 2024 |
| Priority date | Nov 15, 2023 |
| Publication date | May 15, 2025 |
| Grant date | — |
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Abstract
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The present invention relates to a metal-organic framework-polymer fiber-based adsorbent having a core-shell structure and a method for preparing the adsorbent, and a method for recovering a rare earth metal using the same, which result in having easy recovery of the adsorbent together with excellent characteristics of a maximum adsorption amount and an adsorption rate for the rare earth metal. The metal-organic framework-polymer fiber-based adsorbent having the core-shell structure according to the present invention is characterized in that the metal-organic framework is provided on a surface of a sodium polyacrylate (NaPA) fiber.
First claim
Opening claim text (preview).
What is claimed is: 1 . A metal-organic framework-polymer fiber-based adsorbent having a core-shell structure, characterized in that the metal-organic framework is provided on a surface of a sodium polyacrylate (NaPA) fiber. 2 . The metal-organic framework-polymer fiber-based adsorbent having the core-shell structure according to claim 1 , characterized in that a sodium carboxylate group (—COONa) is provided on the surface of the sodium polyacrylate (NaPA) fiber. 3 . The metal-organic framework-polymer fiber-based adsorbent having the core-shell structure according to claim 1 , characterized in that any one of an amine group (—NH 2 ), a carboxyl group (—COOH), a hydroxyl group (—OH), a sulfate group (SO 4 2- ), or a phosphate group ([PO 4 ] 3- ) is provided on the surface of sodium polyacrylate (NaPA) fiber. 4 . The metal-organic framework-polymer fiber-based adsorbent having the core-shell structure according to claim 1 , characterized in that the metal-organic framework is ZIF-8. 5 . The metal-organic framework-polymer fiber-based adsorbent having the core-shell structure according to claim 1 , characterized in that the sodium polyacrylate (NaPA) fiber has several tens of μm or more in a diameter.
Assignees
Inventors
Classifications
by acid leaching · CPC title
Obtaining rare earth metals · CPC title
the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such · CPC title
- B01J20/226Primary
Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF] (preparation of metal complexes containing carboxylic acid moieties C07C51/418; MOF's per se C07F) · CPC title
- B01J20/28028Primary
Particles immobilised within fibres or filaments · CPC title
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- What does patent US2025153136A1 cover?
- The present invention relates to a metal-organic framework-polymer fiber-based adsorbent having a core-shell structure and a method for preparing the adsorbent, and a method for recovering a rare earth metal using the same, which result in having easy recovery of the adsorbent together with excellent characteristics of a maximum adsorption amount and an adsorption rate for the rare earth metal.…
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification B01J20/226. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu May 15 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).