Abstract
Abstract A series of palladium based nanocatalysts which were loaded on CeO 2 doped alumina or clinoptilolite supports were synthesized by the ultrasonic assisted impregnation method. The influence of different ceria doped supports via total oxidation of toluene was investigated. Therefore, physiochemical properties of prepared nanocatalysts were evaluated by XRD, FESEM, BET and FTIR analyses. The FESEM images stated that synthesized naocatalysts had nanometric particles. The average size of catalyst particle was obtained to be 34.5 nm. BET analysis introduced a considerable rise in clinoptilolite surface area after treatment and demonstrated large surface area for Al 2 O 3 and its composites. CeO 2 acts not only as a fine support due to its stability and surface area, but also had catalytic role because of its reducibility properties. Among synthesized catalysts, Pd/Al 2 O 3 –CeO 2 sample resulted the lowest particle size, highest surface area and consequently highest oxidation performance and stability.
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