METHOD OF COATING A CATALYST ON A SUBSTRATE

摘要

A method of coating a substrate with a catalytically active material using a polymer latex is disclosed. A slurry of catalytically active material and water is prepared, the catalytically active material containing activated carbon, and a binder is prepared that contains a polymer latex having a glass transition temperature of 10 C to 30 C. The slurry is combined with the binder to form a mixture, which can then be applied to the substrate to achieve a mixture loading of 20 to 30 weight percent on the substrate. The latex polymer binders can bind a catalytically active platinum on activated carbon powder to a cordierite honeycomb while not interfering with its catalytic activity, such as for hydrogenation.