Abstract
Toxic ozone emissions from corona discharge part of high speed copy machine have been increasing in recent years. Honeycomb-type catalytic supporter is used for such ozone decomposition. We prepared several kinds of cobalt catalysts supported on the honeycomb-type silica-alumina supports, which had the different pore structure in their walls, and investigated the effect of the pore structure on the ozone decomposition performances. Existence of the macro pore, in particular over 50μ m in pore diameter, resulted in an increase of the initial catalytic activity and a minor catalyst deactivation rate. Starch would be a very effective agent to form the above macro pore in the silica-alumina honeycomb-type supports.
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