Title:
【発明の名称】水溶液中のルテニウムの除去方法と装置
Document Type and Number:
Japanese Patent JP3005267
Kind Code:
B2
Abstract:
PURPOSE:To eliminate ruthenium effectively by letting ruthenium tetraoxide producing by oxidation in solution stagnate and converting the solution and solved ruthenium by self-decomposition to unsoluble type. CONSTITUTION:By taking advantage of the character of ruthenium tetraoxide converting to unsoluble ruthenium dioxide by self-decomposition, ruthenium in solution is converted unsoluble type. That is, ruthenium in solution is converted by oxidation to ruthenium tetraoxide with the use of positive electrode or photo-excited semiconductor structure, Furthermore, the ruthenium tetraoxide is let stagnate near the positive electrode or the photo-excited semiconductor structure by forming them like pipe, wool or net structure and the density reduction due to diffusion is suppressed. Through this suppression, the density of ruthenium tetraoxide nearly rises to cause conversion of ruthenium tetraoxide to unsoluble. With this method, ruthenium is converted to unsoluble to eliminate from the solusion.
Inventors:
Akira Sasahira
Takashi Ikeda
Tsutomu Baba
Masanori Takahashi
Takashi Ikeda
Tsutomu Baba
Masanori Takahashi
Application Number:
JP24062290A
Publication Date:
January 31, 2000
Filing Date:
September 11, 1990
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
G21F9/06; C25B1/00; G21F9/10; (IPC1-7): G21F9/06; C25B1/00; G21F9/06; G21F9/10
Domestic Patent References:
| JP62172298A | ||||
| JP6342499A | ||||
| JP63243232A |
Attorney, Agent or Firm:
Honda Kodaira (1 person outside)