Title:
METHOD FOR COLLECTING PRECIOUS METALS FROM SOLUTION CONTAINING PRECIOUS METAL IONS, EXTRACTANT OR ADSORBENT USED THEREFOR, AND BACK EXTRACTANT OR DESORBENT
Document Type and Number:
WIPO Patent Application WO/2012/091125
Kind Code:
A1
Abstract:
Provided are a method for collecting precious metals from a solution containing precious metal ions, an extractant or adsorbent used therefor, and a back extractant or a desorbent. Precious metals are obtained by subjecting a solution containing precious metal ions to reduction. The aforementioned solution is obtained by bringing an extractant that extracted the precious ions into contact with a back extractant or an adsorbent that adsorbed the precious ions into contact with a desorbent. The back extractant and desorbent contain a sulfur-containing amino acid derivative represented by general formula (I). (In the formula, R1 represents a methyl group, an ethyl group, a vinyl group, a C3-8 linear, branched or cyclic hydrocarbon group, or a C6-14 aromatic hydrocarbon group; each R2 independently represents a hydrogen atom, a methyl group, an ethyl group, a vinyl group, a C3-8 linear, branched or cyclic hydrocarbon group, or a C6-14 aromatic hydrocarbon group; and n represents a 0 or a 1.)
Inventors:
SUDO YUKINORI (JP)
SAKAKI TAKASHI (JP)
SAKAKI TAKASHI (JP)
Application Number:
PCT/JP2011/080479
Publication Date:
July 05, 2012
Filing Date:
December 28, 2011
Export Citation:
Assignee:
TOSOH CORP (JP)
SUDO YUKINORI (JP)
SAKAKI TAKASHI (JP)
SUDO YUKINORI (JP)
SAKAKI TAKASHI (JP)
International Classes:
B01J20/34; B01D11/02; B01D11/04; B01J20/22; B01J38/00; C07C323/00; C07C323/58; C22B3/24; C22B11/00; C22B7/00
Domestic Patent References:
| WO2005083131A1 | 2005-09-09 | |||
| WO2011021696A1 | 2011-02-24 | |||
| WO2005083131A1 | 2005-09-09 |
Foreign References:
| JPH04363345A | 1992-12-16 | |||
| JPS4431464B1 | ||||
| JPS5594944A | 1980-07-18 | |||
| US2910373A | 1959-10-27 | |||
| JP2010059533A | 2010-03-18 | |||
| JPH09279264A | 1997-10-28 | |||
| JPH05105973A | 1993-04-27 | |||
| JP2011041916A | 2011-03-03 | |||
| JP2011041918A | 2011-03-03 | |||
| JP2000143617A | 2000-05-26 | |||
| JP2010292588A | 2010-12-28 | |||
| JP2011037052A | 2011-02-23 |
Other References:
JIKKEN KAGAKU KOZA, vol. 20
TETRAHEDRON LETTERS, vol. 39, 1998, pages 2367
JIKKEN KAGAKU KOZA, vol. 16
SHIN JIKKEN KAGAKU KOZA, vol. 16
"Denki Kagaku Hanno Sosa to Denkaiso Kogaku", 1979, KAGAKU-DOJIN PUBLISHING COMPANY, INC, pages: 175
TETRAHEDRON LETTERS, vol. 39, 1998, pages 2367
JIKKEN KAGAKU KOZA, vol. 16
SHIN JIKKEN KAGAKU KOZA, vol. 16
"Denki Kagaku Hanno Sosa to Denkaiso Kogaku", 1979, KAGAKU-DOJIN PUBLISHING COMPANY, INC, pages: 175
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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Claims: