Title:
METHOD FOR MANUFACTURING ADSORBENT
Document Type and Number:
WIPO Patent Application WO/2023/190445
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a method for manufacturing an adsorbent having regenerated adsorption performance, using an adsorbent subjected to desorption treatment, said method including the following steps: (1) subjecting a first adsorbent, which has a ceramic skeleton and in which the surface of the ceramic skeleton is modified with a first organic functional group represented by the formula –X1–A1 [in this formula, X1 represents a divalent organic group, and A1 represents a monovalent functional group capable of adsorbing metal and/or metal ions], to a contact treatment with a liquid including said metal and/or said metal ions, and then performing a contact treatment with a desorption liquid, thereby preparing a second adsorbent; (2) subjecting the second adsorbent prepared in step (1) to a heating treatment in an oxygen atmosphere; and (3) modifying the surface of the ceramic skeleton of the second adsorbent heat-treated in step (2) with a second organic functional group represented by the formula –X2–A2 [in this formula, X2 represents a divalent organic group, and A2 represents a monovalent functional group capable of adsorbing metal and/or metal ions], thus manufacturing a third adsorbent.
Inventors:
OSAKO TAKAO (JP)
SUGAHARA KOSEI (JP)
KATO KAZUHIKO (JP)
SUGAHARA KOSEI (JP)
KATO KAZUHIKO (JP)
Application Number:
PCT/JP2023/012383
Publication Date:
October 05, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO LTD (JP)
International Classes:
B01J20/34; B01J20/22; B01J20/28; C01B37/00
Domestic Patent References:
| WO2017002871A1 | 2017-01-05 | |||
| WO2022163833A1 | 2022-08-04 |
Foreign References:
| JP2014171929A | 2014-09-22 | |||
| JP2014124613A | 2014-07-07 | |||
| JP2019025436A | 2019-02-21 |
Attorney, Agent or Firm:
MIYAJIMA Manabu et al. (JP)
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