Caracterización química y actividad catalítica para la oxidación de metano de catalizadores de Pd...

Pd catalysts supported on SiO2, CeO2/SiO2 and Ce0,5Zr0,5Ox/SiO2 were prepared with Pd content between 0,1-0,5%p/p, Catalysts were characterized by XRF, XRD, TPR, CO chemisorptions and infrared spectroscopy of adsorbed CO (FTIR-CO), The CH4 oxidation reaction was studied by at stoichiometric (CH4/O2=0,5) and reducing (CH4/O2=1,5) conditions, The results of TPR and FTIR-CO suggest a strong interaction of Pd with Ce or CeZr, The low values of CO/Pd ratio showed the presence of large PdO particle...