Recubrimiento por inmersión de Pt-ZSM5 sobre espumas de aluminio

• OIHANE SANZ, LUCIANO COSTA-ALMEIDA, JUAN MANUEL ZAMARO, MARÍA ALICIA ULLA, EDUARDO ERNESTO MIRO, MARIO MONTES

Gramado, Brasil

Simposio; XX Simposio Iberoamericano de Catálisis (SICAT 2006); 2006

Zeolites are crystalline aluminosilicates whose structural framework contains cavities occupied by cations or water molecules allowing ionic exchange and reversible dehydration. Zeolites are also catalytically active materials for environmental applications dealing with high flow rates. For this reason, zeolites are applied on structured conformations. The most common structured supports are ceramic monoliths due to their widespread application in the automotive industry. Monoliths present a structure consisting of straight narrow channels where a laminar flow pattern takes place. This implies mass transport restraints from the gas phase to the catalytic layer of the wall. On the other hand, foams offer an enhanced turbulence due to their open porosity structure. The aim of this work is to deposit a ZSM5 zeolite on aluminum foams using a dip-coating method with the purpose of obtaining a good adherence to make the system stable on stream. Anodization is studied as a surface treatment to promote zeolite adhesion, since it produces an alumina layer with excellent properties whose roughness can be controlled.