INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Monolithic filters based on sepiolite for the post-treatment of diesel engine exhausts
Autor/es:
C. FERNANDEZ CABALLERO; EDUARDO E. MIRÓ; FERNANDO E. TULER; P. AVILA; R. PORTELA; V. G. MILT
Lugar:
San Sebastián
Reunión:
Congreso; Congreso ICOSCAR 5; 2016
Resumen:
Most commercialized wall-flow monolithic filters are made of silicon carbide or cordierite andpresent high porosity, but low surface area. Alternatively, wall-flow monoliths with high surface area can be employed as support for catalytically active phases. This approach is used in the present work with the aim of developing catalytic ceramic filters to trap soot particles and remove NOx from diesel engine exhausts. Catalytic diesel particulate wall-flow filters force the exhaust gases to flow through the monolith walls, so that soot particles are trapped and in contact with the catalyst, they are burnt (passive regeneration). Sepiolite was used as catalytic support to prepare the structured catalytic filter based on Co-Ba-K. The active elements were employed for the passive regeneration of the filter and the Pore Generating Agent (PGA) was added to tune the volume and size of macro-pores to allow exhaust gases to flow through the wall. The channel ends of the honeycomb monoliths obtained by extrusion were alternatively plugged, using different materials for this purpose, to obtain wall-flow filters.