Surface treatment method of catalyst

Abstract

PURPOSE:To prevent deterioration due to water by providing a water-repellent film on the surface of a catalyst used as a catalyst plug to simplify the water supply of a lead storage battery. CONSTITUTION:After a catalyst is immersed for 5-20min into a silicon resin solution diluted to 15-20% by an organic solvent, it is dried by the wind and treated for 5-20min at 200-250 deg.C, thereby a generated film is excellent in water-repellency and heat resistance, and in addition, the deterioration of reactivity of the catalyst due to the generation of the film is small, thus the catalyst suitable for use as a catalyst plug can be obtained.

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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    JP-S5278039-AJuly 01, 1977Japan Storage Battery Co LtdCatalytic plug for lead battery

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