title: Diesel particulate abatement via wall-flow traps based on perovskite catalysts.
abstract: It is probably redundant to stress how extensive are nowadays the attempts to reduce the diesel particulate emissions from automotive and stationary sources. The present paper looks into a technology relied on a catalytic trap based on a SiC wall-flow monolith lined with suitable catalysts for the sake of promoting a more complete and faster regeneration after particulate capture. All the major steps of the catalytic filter preparation are dealt with, including: the synthesis and choice of the proper catalyst and trap materials, the development of an in situ catalyst deposition technique, the bench testing of the derived catalytic wall-flow. The best catalyst selected was the perovskite La0.9K0.1Cr0.9O3-delta. The filtration efficiency and the pressure drop of the catalytic and non-catalytic monoliths were evaluated on a diesel engine bench under various operating conditions.
authors.affiliation: Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, Corso Duca degli Abruzzi, 24-10129 Torino, Italy. debora.fino@polito.it
authors.forename: Debora
authors.initials: D
authors.lastname: Fino
authors.forename: Nunzio
authors.initials: N
authors.lastname: Russo
authors.forename: Guido
authors.initials: G
authors.lastname: Saracco
authors.forename: Vito
authors.initials: V
authors.lastname: Specchia
mesh_terms: D000397:Air Pollution / Q000517:prevention & control; D017610:Calcium Compounds / Q000737:chemistry*; D002384:Catalysis; D005374:Filtration; D005742:Gasoline; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D014025:Titanium / Q000737:chemistry*; D001335:Vehicle Emissions / Q000517:prevention & control*
chemical_list: D017610:Calcium Compounds; D005742:Gasoline; D010087:Oxides; D001335:Vehicle Emissions; C059910:perovskite; D014025:Titanium