Title:
ロジウムの還元方法
Document Type and Number:
Japanese Patent JP5413588
Kind Code:
B2
Abstract:
To provide a reduction method facilitating reduction treatment and having high recovery rate of a metallic rhodium.
A rhodium reduction method is characterized in that rhodium black is generated by adding hydrazine into rhodium nitrite solution and reducing rhodium ammonium nitrite. It is preferable that the method uses the rhodium ammonium nitrite, adds the hydrazine to rhodium ammonium nitrite solution at ≥pH8 and ≥50°C solution temperature, adds the hydrazine little-by-little to the solution while keeping the solution temperature at 60-80°C and continues reaction until a reduction potential becomes -700 mV(Ag/AgCl) or lower.
COPYRIGHT: (C)2011,JPO&INPIT
Inventors:
Satoshi Shibata
Satoru Okada
Satoru Okada
Application Number:
JP2009250106A
Publication Date:
February 12, 2014
Filing Date:
October 30, 2009
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
C22B11/00; C22B3/44; C22B5/12
Domestic Patent References:
| JP10226828A | ||||
| JP2007270228A | ||||
| JP2008248316A | ||||
| JP2010174352A | ||||
| JP201193748A |
Attorney, Agent or Firm:
Hiroshi Chiba