SAE technical papers on CD-ROM/SAE technical paper series · 2003 · 13 citations · 4 references
Natural SciencesChemical EngineeringMaterials ScienceCatalysisReaction EngineeringSurface EngineeringCatalyst CharacterizationCatalyst DesignCatalyst PreparationCatalytic MaterialsCatalytic Reaction EngineeringZeolite CatalysisCatalyst MechanismsDesorptionHeat ResistancePurificationZeolite AdsorbentsZeolite AdsorptionZeolite CatalystsZeolites
<div class="htmlview paragraph">A catalyzed hydrocarbon (HC) trap aiming at the super-ultra low emission vehicle (SULEV) regulation was developed using a metal-impregnated zeolite. To enhance the adsorption and to raise the desorption temperature for a wide range of HC species, the modification of zeolite with certain metals was needed and Ag was found to be the most promising. Using a Ag impregnated zeolite, a three way catalyst was prepared, and its HC purification ability for a model gas simulating cold-start HCs was studied. Its heat resistance was also examined. A vehicle test for a fresh catalyzed HC trap showed that the cold-start HC after the newly developed trap almost reached the SULEV regulation level.</div>
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