Niken-nano ceo2 composite plating for catalytic box used to treat engine exhaust gas

Abstract

Engine exhaust gases can be  treated by the catalyst box made of CeO2 coated ceramic. In this study, Ni-CeO₂ particles composite were coated on the working surface of the catalyst box by electroplating. Cesi dioxide was crushed in the mortar and ceramic ball for 48 h. The nano-micro size of the particles was confirmed by TEM and particle size distribution analysis. Ni-CeO₂ composite coating was obtained by electroplating of Watt nickel solution with the addition of 4-8 g/l CeO₂ at cathode current density of 1-2 A/dm² and temperature of 40-50 ^oC. EDX analysis show that the CeO₂ content in the coating is about 6%, which is equivalent to the content of CeO₂ in the conventinal products.