HYDROGENATION OF CARBON-MONOXIDE OVER ZIRCONIA-SUPPORTED PALLADIUM CATALYSTS PREPARED USING WATER-IN-OIL MICROEMULSION

The hydrogenation of carbon monoxide was carried out over palladium ca talysts prepared by a novel preparation method using water-in-oil micr oemulsion. Their catalytic performance was compared with that of the c atalysts prepared by the conventional impregnation method. The size di stribution of the palladium particles prepared by the microemulsion me thod was remarkably narrow, and the average particle size was much sma ller than that prepared by the impregnation method. The catalysts prep ared by the microemulsion method were found to exhibit a much higher a ctivity for the hydrogenation of carbon monoxide than the catalysts pr epared by impregnation.