Low Temperature Oxidation Catalysis For Diesel Engine Emission Control By Ft-ir

摘要

Various catalysts based on platinum and palladium supported on basic metal oxides and solid solutions containing rare-earth elements were investigated in the study described here.rnA concentration of the noble metals as low as 0.8% was sufficient to obtainrna satisfactory CO oxidation rate, without the formation of noxious products, such as NO_x or aldehydes. Currently, the rare-earth-based compounds (that on praseodymium, in particular) seem to be most interesting for this type of exhaust gas control application. The analytical techniques combined here, i.e. mass spectrometry, in situ and operando IR spectroscopy, yield a very powerful method for studying in detail this type of catalyst, under realistic conditions, in order to gain mechanistic information that will allow tailoring an improved active and selective catalyst.