Regeneration Methods for Commercial Automotive Three-way Catalysts: Development and Assessment of Regeneration Methods for Commercial Automotive Three-way Catalysts - Henrik Birgersson - Böcker - VDM Verlag Dr. Müller - 9783639105100 - 27 november 2008
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Regeneration Methods for Commercial Automotive Three-way Catalysts: Development and Assessment of Regeneration Methods for Commercial Automotive Three-way Catalysts

Henrik Birgersson

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Regeneration Methods for Commercial Automotive Three-way Catalysts: Development and Assessment of Regeneration Methods for Commercial Automotive Three-way Catalysts

Car exhaust catalysts were introduced in the early 1980?s, to limit the release of pollutants such as hydrocarbons, carbon monoxide and nitrogen oxides. These catalysts contain noble metals such as palladium (Pd), platinum (Pt) and rhodium (Rh) and are able to simultaneously abate all three of the above-mentioned pollutants, hence the name three-way catalyst (TWC). The exposure to high temperatures (800-1000 °C) during operation and the presence of additives in gasoline and lubricants will, after a certain time, lower the activity of the TWC. High temperatures reduce the active area by causing the noble metals to agglomerate and sinter, whereas the additives alter the activity either by fouling the pores of the support material or by interacting with the metals. The main objective of this work was to develop a method which allows for the removal of contaminants (additives) from the washcoat and enables the redispersion of the active sites (noble metals), in an effort to recover lost catalyst activity. For this purpose, regeneration experiments were carried out on a wide spectrum of different commercial car exhaust catalysts.

Media Böcker     Pocketbok   (Bok med mjukt omslag och limmad rygg)
Releasedatum 27 november 2008
ISBN13 9783639105100
Utgivare VDM Verlag Dr. Müller
Antal sidor 76
Mått 113 g
Språk Engelska