Process for the catalytic reduction of reducible compounds in so

Details Process for the catalytic reduction of reducible compounds in so Process for the catalytic reduction of reducible compounds in so

1978-03-24

1979-06-26

Ozaki, G.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

75108, 75109, 210 42R, 423352, 423395, C01B 2100, C01C 100

Patent

active

041593090

ABSTRACT:
Reducible pollutants can be detoxified by reduction and metals can be recred by reduction of the corresponding metal ions by bringing into contact a catalyst with the solution which is suitable for the electrochemical reduction of the ions in question, and mixing into the solution (or bubbling therethrough in the case of a gas) a reducing agent that has a redox potential in the redox system of the reducing agent and its oxidation product that is more negative than the redox potential of the substance to be reduced and its reduction product. The catalyst is a material that is suitable for use as an anode material at which hydrogen can be oxidized in a fuel cell. Such catalysts include finely divided platinum, activated carbon coated with platinum, tungsten carbide and activated carbon coated with tungsten carbide, particularly. Hydrogen is a good reducing agent for the purpose.

REFERENCES:
patent: 3369886 (1968-02-01), Metzger et al.
patent: 3406011 (1968-10-01), Zirngibl et al.
patent: 3788833 (1974-01-01), Short
patent: 3957506 (1976-05-01), Lundquist et al.
patent: 4073866 (1978-02-01), Yamaki et al.

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