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1647643 
Journal Article 
MAINTENANCE OF THREE WAY CATALYTIC CONVERTER - THERMAL DEACTIVATION 
Kruczynski, SW 
2012 
3 
239-242 
WOS:000306267700009 
The present paper gives a description of deactivation processes of three way exhaust gas catalytic converters, with special consideration of thermal deactivation. Test results of new (or "fresh") and aged reactor during five-hours thermal test are presented. Conversion of carbon monoxide, hydrocarbons and nitric oxides is evaluated. Ignition temperatures of catalyst of individual noxious matters are determined, as well for new as for aged catalyst. Results of conversion measurements are correlated with results of physical and chemical tests of catalyst structure changes during ageing test. 
maintenance of catalytic converter; thermal deactivation; precious metal dispersion