Zirconia-supported silver nanoparticles for the catalytic elimination of contaminants

MONTAÑA, MAIA; LEGUIZAMÓN APARICIO, MARÍA SILVIA; OCSACHOQUE, MARCO ANTONIO; CASELLA, MÓNICA L.; LICK, ILEANA DANIELA

Santa Fé

Conferencia; VI San Luis School and Conference on Surfaces, Interfaces and Catalysis; 2018

MINCyT UNL Humboldt Foundation

This work presents the physicochemical characterization and the activity of zirconia-supported silver catalysts for the catalytic total oxidation at low temperatures of pollutants present in diesel engine exhaust (naphthalene and soot) which are released by the atmosphere generating serious environmental and human health problem. This process can be carried out in the catalytic filters located in the exhaust pipe of automobiles. A prominent characteristic of this catalyst is the ability of metal silver to activate de oxygen though to dissociative adsorption, a capacity that can be promoted synergistically with a mobility of oxygen provided by the support [1]. In this context, the zirconia with its capacity to generate oxygen vacancies is presented as an adequate support [2]. One factor that should be taken into account with silver catalysts is that they must contain small-sized particles (