Hydrophobic catalyst for recombiners
AssigneeVarta Batterie Aktiengesellschaft
InventorsMargarete Jung, August Winsel
Life of this patent
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Abstract
A palladium-containing catalyst mat is made of a rolled PTFE-Kieselgur mixture which has been soaked with PdCl.sub.2 solution. It is made hydrophobic after soaking by treatment with a PTFE-Emulsion. Finally, it is subjected at about 430.degree. C. to a process which is similar to sintering and in which very finely divided Pd is produced through heat decomposition of the PdCl.sub.2. The catalyst mat is preferably combined with a carbon mat impregnated with CuO which, for example, may be a carbon felt which has been made denser through roller compression.
Claims14
A catalyst for recombining hydrogen and oxygen, particularly gases evolving during operation of electric storage batteries, comprising
- a mixture of polytetrafluoroethylene and Kieselgur as the catalyst carrier material, provided with an active catalytic material, the polytetrafluoroethylene-Kieselgur mixture being formed into a rolled mat, the mat being provided after rolling with a catalytically active material, then made hydrophobic, and sintered.
Dependencies are inferred from the claim text.