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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)
Application Number:
PCT/JP2012/053050
Publication Date:
August 23, 2012
Filing Date:
February 10, 2012
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO (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:
JPH08217460A1996-08-27
JP2007302944A2007-11-22
JP2010174336A2010-08-12
JPH01225730A1989-09-08
JPH0433733B21992-06-03
JP2005239441A2005-09-08
JP4116490B22008-07-09
JPS5638273A1981-04-13
JPH02254126A1990-10-12
JP4144311B22008-09-03
JPH0778264B21995-08-23
JP2007302938A2007-11-22
JP4506041B22010-07-21
JP2005002376A2005-01-06
JP2005194546A2005-07-21
JPS5168493A1976-06-14
JPS5168499A1976-06-14
JPH01230730A1989-09-14
JP3733909B22006-01-11
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)
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Claims: