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US 2023/0405553 A1Published application
Adsorbent particles, method for producing adsorbent particles, base material particles, filling column, and method for recovering rare earth element
AssigneeResonac Corporation
InventorsMasahiro AOSHIMA, Yohei ISHIKAWA, Masato MIYATAKE
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Abstract
Adsorbent particles including: porous carrier particles containing an organic polymer; polyethylenimine attached to a surface of the porous carrier particles; and a diglycolic acid residue bonded to an amino group of the polyethylenimine. A most frequent pore size of the porous carrier particles exceeds 10 nm.
Claims14
Adsorbent particles comprising:
- porous carrier particles comprising an organic polymer;
- polyethylenimine attached to a surface of the porous carrier particles;
- and
- a diglycolic acid residue bonded to an amino group of the polyethylenimine, wherein a most frequent pore size of the porous carrier particles exceeds 10 nm.
1 more element
(canceled)
A method for producing adsorbent particles, the method comprising:
- preparing base material particles comprising porous carrier particles containing an organic polymer and polyethylenimine attached to a surface of the porous carrier particles;
- and
- bonding diglycolic acid or an anhydride thereof to an amino group of the polyethylenimine to form adsorbent particles,
- wherein a most frequent pore size of the porous carrier particles exceeds 10 nm.
1 more element
Base material particles comprising:
- porous carrier particles containing an organic polymer;
- and
- polyethylenimine attached to a surface of the porous carrier particles,
- wherein a most frequent pore size of the porous carrier particles exceeds 10 nm.
1 more element
Dependencies are inferred from the claim text.