THE EFFECT OF INORGANIC CONSTITUENTS OF THE SUPPORT ON THE CHARACTERISTICS OF CARBON-SUPPORTED PLATINUM CATALYSTS

Two commercial activated carbons and the corresponding demineralized samples have been used as catalyst supports for platinum in order to learn about the role played by the inorganic constituents of the carbons on the catalyst characteristics. CO and H//2 chemisorption and X-ray line broadening have been used to determine metal dispersion and mean particle size. The results indicate that the inorganic matter on the carbon plays an important role in the stabilization of the average platinum particle size by making sintering more difficult.