Palladium catalysts were prepared by dry impregnation and wet incipient methods of metal nitrate solutions being added to slurry of alumina and silica supports separately; this was finalized by drying in an air oven and calcination in a tube furnace at 600 �C for two hours. Characterization of the catalysts involved several techniques including a) pulse chemisorption; b) Brunauer-Emmett-Teller (BET) method of physical adsorption to measure total surface area; c) Temperature Programmed Oxidation (TPO); and d) Temperature Programmed Desorption (TPD) to determine active sites of the catalysts. Pulse, TPO/TPD studies were conducted with Micromeritics 2705 Chemisorb equipment. Dispersion of Pd on alumina was 35%, TPD of this catalyst showed hydrogen desorption at 300-550 �C indicating hydrogen was adsorbed even at high temperature. Activity studies are being done using CO oxidation (1% CO and oxygen) on selective catalysts. The data on catalytic properties as well activity studies will be presented.

Preparation, characterization, and activity studies of palladium catalysts on alumina and silica supports

245th National Meeting (2013)

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