Ruthenium recovery process

Details Ruthenium recovery process Ruthenium recovery process

1977-10-25

1979-01-02

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 10, 134 13, 252415, 423 22, 423491, B08B 308

Patent

active

041325699

ABSTRACT:
Ruthenium is stripped from a catalyst or electrode substrate by immersion in a fluoboric acid solution, converted to ruthenium oxide, and the ruthenium oxide is then converted to the alpha ruthenium trichloride for use in the preparation of fresh catalyst and/or electrodes.

REFERENCES:
patent: 3573100 (1971-03-01), Beer
patent: 3706600 (1972-12-01), Pumphrey et al.
patent: 3761312 (1973-09-01), Entwisle et al.
patent: 3761313 (1973-09-01), Entwisle et al.
patent: 3997337 (1976-12-01), Pittie et al.
patent: 4002470 (1977-01-01), Isa et al.
Biswas et al., Indian J. Chem., "A Note on the Alkali Nitrate Fusion for Quant. Est. of Ru", vol. 6, Jan. 1968, pp. 51-52.
Durkin, Metallurgia, "How to Descale Titanium", May 1954, p. 256.

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