Title:
NOBLE METAL PRODUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/243702
Kind Code:
A1
Abstract:
This noble metal production method comprises: a base metal dissolution step for producing a noble-metal-containing raw material and a base metal eluate in which a base metal has been dissolved; a noble metal dissolution step for producing a noble metal eluate in which the noble metal contained in the noble-metal-containing raw material has been eluted; a heating step for heating the noble metal eluate in the range of 30-100°C; a noble metal adsorption step for adding a yeast to the noble metal eluate after heating and selectively adsorbing to the yeast noble metal ions included in the noble metal eluate; and a noble metal separation step for adding a reducer to a dispersion of the yeast to which the noble metal ions are adsorbed, and separating the noble metal which has become nanoparticles.
Inventors:
IIJIMA HARUKA (JP)
SUZUKI SHUMPEI (JP)
HIGAMI AKIHIRO (JP)
KONISHI YASUHIRO (JP)
SAITO NORIZO (JP)
SUZUKI SHUMPEI (JP)
HIGAMI AKIHIRO (JP)
KONISHI YASUHIRO (JP)
SAITO NORIZO (JP)
Application Number:
PCT/JP2023/022369
Publication Date:
December 21, 2023
Filing Date:
June 16, 2023
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
UNIV OSAKA PUBLIC CORP (JP)
UNIV OSAKA PUBLIC CORP (JP)
International Classes:
C22B11/00; B09B3/80; C22B3/06; C22B3/10; C22B3/18; C22B3/22; C22B3/44; C22B7/00
Foreign References:
| JP2021501259A | 2021-01-14 | |||
| JP2017020100A | 2017-01-26 | |||
| JP2016183371A | 2016-10-20 | |||
| JP2013540572A | 2013-11-07 | |||
| JP2013163868A | 2013-08-22 | |||
| JP2023004079A | 2023-01-17 |
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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