Co3O4 supported on ZrO2-Al2O3 catalysts for propane and naphthalene total oxidation

LICK, ILEANA DANIELA; DELIA GAZZOLI; MARÍA SILVIA LEGUIZAMÓN APARICIO

Florencia

Congreso; Europacat 2017; 2017

Propane and naphthalene combustion reactions were studied in presence of catalysts containing cobalt species both on Alumina-Zirconia (AlZ) and Alumina (Al) supports: Co(m)AlZ and Co(m)Al. Catalysts were characterized by BET, XRD, SEM-EDAX, TPR and Raman spectroscopy. Measurements of catalytic activity were performed in fixed bed micro-reactors. All catalysts containing cobalt species (Co3O4) exhibit a good activity for propane combustion reaction. The catalytic activity depends on the metal loading, the catalysts with higher cobalt loading (10 and 15 wt.%) and easily reducible Co3O4 particles being the most active. The catalysts supported on the modified alumina present highest activity. The Co10AlZ catalyst is the most active catalyst for propane combustion. In addition, the presence of NO increases slightly the activity of the Co(m)AlZ catalysts, which is a very important fact because this contaminant is present in gaseous emissions.Co15AlZ catalyst markedly influences the naphthalene combustion temperature.