Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1977-06-08
1978-09-19
Shine, W. J.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
B01J 2118, B01J 2340, B01J 2350, B01J 2352
Patent
active
041153227
ABSTRACT:
A process for obtaining electrocatalysts having a thin film of a noble metal such as palladium, platinum, gold or less noble such as silver or an alloy of noble metals or a noble metal together with a less noble one such as silver or nickel. These include metals from Group VIII of the periodic chart. The thin film is electrodeposited on nonporous pyrolytic graphite surface from an aqueous solution containing a salt of the noble metal or metals in the presence of a complexing agent. The solution is stirred mechanically or the pyrolytic graphite cathode is rotated to create conditions favorable for the electrochemical deposition to be carried out at the highest possible current densities. The electrochemical catalysts thereby obtained are useful in oxygen adsorption processes, oxygen and hydrogen evolution processes, oxide formation and oxygen reduction processes. The metal or alloy film is of a granular or nodular nature and of a depth not exceeding 7.mu. and has a grain size smaller than 2.mu. or of a filament nature with peaks each of a base size running from 0.1 to 0.2.mu.. The metal or the alloy is selected from the group comprising silver, palladium, gold, a gold-silver alloy and a silver-nickel alloy.
REFERENCES:
patent: 850944 (1907-04-01), Marshall
patent: 2178454 (1939-10-01), Metzger et al.
patent: 2452308 (1948-10-01), Lambros
patent: 3077508 (1963-02-01), Oswin
patent: 3296102 (1967-01-01), Worsham
patent: 3341936 (1967-09-01), Sanstede et al.
patent: 3440181 (1969-04-01), Olstowski
patent: 3645860 (1972-02-01), Fishman et al.
Hydro-Quebec
Shine W. J.
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