Title:
ABSORBENT PARTICLES, BASE PARTICLES, PACKED COLUMN AND METHOD FOR RECOVERING RARE EARTH ELEMENTS
Document Type and Number:
WIPO Patent Application WO/2022/039112
Kind Code:
A1
Abstract:
These absorbent particles include a carrier particle which comprises an organic polymer that includes monomer units derived from a styrene-base monomer, an organic compound which is attached to the surface of the carrier particle and which has an amino group, and a diglycolic acid residue which is bonded to the amino group. The organic compound further has at least one group selected from a carbonyl group, a sulfonyl group, a sulfinyl group, and an oxyalkylene group.
Inventors:
AOSHIMA MASAHIRO (JP)
ISHIKAWA YOHEI (JP)
MIYATAKE MASATO (JP)
ISHIKAWA YOHEI (JP)
MIYATAKE MASATO (JP)
Application Number:
PCT/JP2021/029843
Publication Date:
February 24, 2022
Filing Date:
August 13, 2021
Export Citation:
Assignee:
SHOWA DENKO MATERIALS CO LTD (JP)
International Classes:
C22B59/00; B01D15/00; B01D15/08; B01J20/26; B01J20/285; B01J20/34; C22B3/06; C22B3/24; G01N30/88
Domestic Patent References:
| WO2012057185A1 | 2012-05-03 | |||
| WO2014157225A1 | 2014-10-02 |
Foreign References:
| JP2019077906A | 2019-05-23 | |||
| JP2012030197A | 2012-02-16 | |||
| JP2019019400A | 2019-02-07 | |||
| JP2018030069A | 2018-03-01 | |||
| JP2011169660A | 2011-09-01 |
Other References:
SHINOZAKI, TOMOHIRO ET AL.: "Preparation of Polymeric Adsorbents Bearing Diglycolamic Acid Ligands for Rare Earth Elements", INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 57, 2018, pages 11424 - 11430, XP055759356, DOI: 10.1021/acs.iecr.8b01797
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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