Title:
易溶性スポンジ白金の製造方法
Document Type and Number:
Japanese Patent JP5556681
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing easily dissolvable sponge platinum, in which there is no risk regarding safety, such as risk of hydrogen explosion during operation, which is economically advantageous, and in which sponge platinum is easily dissolved and dissolution residue is not produced at aqua regia dissolution.SOLUTION: An alkali such as sodium hydroxide is added to ammonium chloroplatinate and dissolved, a reducing agent such as hydrazine is added to the obtained solution to obtain the sponge platinum, and then, the separated and recovered sponge platinum in a wet state is heated to the temperature of 800-1,000°C as it is, and roasted. The obtained roasted material is crushed to obtain the dried sponge platinum having the grain size of 1-3 mm.
Inventors:
Yasushi Isshiki
Yoshiaki Manabe
Hideaki Sato
Hidemasa Nagai
Yoshiaki Manabe
Hideaki Sato
Hidemasa Nagai
Application Number:
JP2011012761A
Publication Date:
July 23, 2014
Filing Date:
January 25, 2011
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B11/02; B22F9/04; B22F9/24; C22B1/02; C22B11/00
Attorney, Agent or Firm:
Yamamoto Right clue
Tsujikawa 典範
Tsujikawa 典範
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