Title:
METHOD FOR COLLECTION OF RUTHENIUM OR RUTHENIUM COMPOUND
Document Type and Number:
WIPO Patent Application WO/2012/111542
Kind Code:
A1
Abstract:
According to the present invention, it becomes possible to collect ruthenium or a ruthenium compound, which is expensive, with high efficiency even from an aqueous solution containing a water-soluble salt, a lower alcohol, an organic acid or the like by adding at least one specific inorganic adsorbent to an aqueous solution containing ruthenium or the ruthenium compound, dissolving the entire or a portion of the inorganic adsorbent under acidic conditions, and adding an alkali to the solution to adjust the pH value of the solution to an alkaline pH value of 7 or more to thereby adsorb the ruthenium compound onto the inorganic adsorbent while precipitating the inorganic adsorbent.
Inventors:
OUCHI TAKASHI (JP)
NISHIMURA YOSHIO (JP)
NISHIMURA YOSHIO (JP)
Application Number:
PCT/JP2012/053050
Publication Date:
August 23, 2012
Filing Date:
February 10, 2012
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
OUCHI TAKASHI (JP)
NISHIMURA YOSHIO (JP)
OUCHI TAKASHI (JP)
NISHIMURA YOSHIO (JP)
International Classes:
C22B11/00; B01J20/04; B01J20/12; B01J20/16; B01J20/34; C02F1/28; C22B3/44; C22B7/00
Foreign References:
| JPH08217460A | 1996-08-27 | |||
| JP2007302944A | 2007-11-22 | |||
| JP2010174336A | 2010-08-12 | |||
| JPH01225730A | 1989-09-08 | |||
| JPH0433733B2 | 1992-06-03 | |||
| JP2005239441A | 2005-09-08 | |||
| JP4116490B2 | 2008-07-09 | |||
| JPS5638273A | 1981-04-13 | |||
| JPH02254126A | 1990-10-12 | |||
| JP4144311B2 | 2008-09-03 | |||
| JPH0778264B2 | 1995-08-23 | |||
| JP2007302938A | 2007-11-22 | |||
| JP4506041B2 | 2010-07-21 | |||
| JP2005002376A | 2005-01-06 | |||
| JP2005194546A | 2005-07-21 | |||
| JPS5168493A | 1976-06-14 | |||
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| JP3733909B2 | 2006-01-11 |
Other References:
"Jikken Kagaku Koza (Vol. 25) Shokubai Kagaku, Denki Kagaku", vol. 25, January 2006, MARUZEN CO., LTD., pages: 57 - 58
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
Kobayashi 浩 (JP)
Kobayashi 浩 (JP)
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Claims: