ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Next 2008 European legislation on diesel engines will impose the use of specific traps,placed in the car exhaust line, so as to meet very stringent particulate emission limits (0.005 g/km).This paper provides a survey of the advancement status of R&D in the field of diesel particulatetraps. Special emphasis is given to the combined use of traps and catalysts for regeneration purposesvia catalytic combustion of the collected soot in the traps. Issues like trap materials selection,catalyst development, catalytic vs. non-catalytic trap performance are addressed. Specific highlightsof the research in catalytic materials developed at Politecnico di Torino in the framework of EUprojects will also be provided. In order to enhance the soot-catalyst contact conditions, severalkinds of catalysts have been developed: oxygen spillover oxide, mobile catalysts based on alkalivanadates, spinels for the combined removal of particulate and NOx, precious metals enabling theNO oxidation to NO2 followed by reaction of this latter with particulate, heavy metal oxides, alkalimetalsubstituted perovskites capable of delivering oxygen species. An overview of these differentapproaches to soot oxidation will be provided pointing the way towards possible synergetic effectsin multi-component catalysts
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.45.2083.pdf
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