Abstract
Supported platinum on sepiolite catalysts with high macroporosities have been prepared as conformed ceramic extrudates by a single-step synthesis route, designated impregnated carbon procedure (ICP), using activated carbon as a templating agent and also for in situ reduction of the metal salt. These catalysts display unique textural and mechanical features and highly dispersed Pt nanoparticles whose catalytic activities were evaluated in the combustion of trace toluene in air. The effects of the particle size, oxidation state and loading of platinum and of the reduction and calcination conditions on the catalytic activity were investigated.
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