Method for recovery of platinum and iridium from catalysts

Details Method for recovery of platinum and iridium from catalysts Method for recovery of platinum and iridium from catalysts

1974-11-18

1978-01-17

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75114, 75121, 423 22, C22B 1104

Patent

active

040690407

ABSTRACT:
The invention relates to the recovery of the constituent elements of catalysts containing precious metals, such as platinum and iridium deposited on aluminous supports. This recovery is accomplished by a substantially total solubilization of the catalysts by means of hydrochloric acid and by extraction, for example by means of ion exchange resins. This system allows for a good separation of the platinum and the iridium.

REFERENCES:
patent: 3473921 (1969-10-01), Schmuckler
patent: 3656940 (1972-04-01), Gandon et al.
patent: 3672874 (1972-06-01), Wiley
patent: 3725047 (1973-04-01), Schneider
patent: 3728103 (1973-04-01), Lishevskaya et al.
patent: 3787554 (1974-01-01), Ziegler
patent: 3856912 (1974-12-01), Vesely
patent: 3876747 (1975-04-01), Pittie et al.
patent: 3999983 (1976-12-01), Grosbis et al.
Merck Index, 7th Edn., 1960, p. 1579.

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