Title:
PROCESS FOR PREPARING CATALYST
Document Type and Number:
WIPO Patent Application WO/1981/002532
Kind Code:
A1
Abstract:
A process for preparing a catalyst of fine metal particles having a large specific surface area like platinum black, which comprises reducing a solution containing platinum ion and at least one metal ion or complex ion having a redox potential different from that of platinum ion, and eluting the metal having a redox potential different from that of platinum out of the precipitated metal particles. The thus obtained catalyst has a small particle size and is well suited for use as an electrode of a fuel cell.
Inventors:
TAKEUCHI S (JP)
MATSUDA S (JP)
MATSUDA S (JP)
Application Number:
PCT/JP1981/000044
Publication Date:
September 17, 1981
Filing Date:
March 04, 1981
Export Citation:
Assignee:
HITACHI LTD (JP)
TAKEUCHI S (JP)
MATSUDA S (JP)
TAKEUCHI S (JP)
MATSUDA S (JP)
International Classes:
B01J23/42; B01J23/44; B01J25/00; B01J37/16; H01M4/92; H01M4/86; (IPC1-7): B01J25/00; B01J25/02; B01J23/40; B01J23/42; B01J23/44; B01J23/46; H01M4/88; H01M4/92; H01M4/98
Foreign References:
| JPS4116745B1 | 1966-09-22 | |||
| JPS5021236A | 1975-03-06 | |||
| JPS4216500B1 | 1967-09-06 | |||
| JPS5521589A | 1980-02-15 |
Other References:
See also references of EP 0047322A4
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