MULTIFUNCTIONAL CATALYSTS, WHICH INCLUDE CERIUM AND URANIUM AND AT LEAST ONE METAL FOR THE CONVERSION OF THE POLLUTANTS EMITTED BY INTERNAL COMBUSTION ENGINES AND THEIR PREPARATIONS.

摘要

THE INVENTION REFERS TO A MULTIFUNCTIONAL CATALYST CONTAINING CERIUM, URANIUM AND AT LEAST ONE METAL, FOR THE CONVERSION OF POLLUTANTS EMITTED BY INTERNAL COMBUSTION ENGINES AS WELL AS THEIR PREPARATIONS. THIS CATALYST CONSISTS OF A POROUS LAYER CONTAINING: APPROXIMATELY 20-99% OF AT LEAST REFRACTORY OXIDE; APPROXIMATELY 0.8-70% OF A CERIUM OXIDE AT LEAST; APPROXIMATELY 0.1-50% OF AN URANIUM OXIDE AT LEAST; APPROXIMATELY 0.1-20% OF A METAL CHOSEN FROM THE GROUP FORMED BY PT, RH, PD, RU, IR, AU AND THEIR MIXTURES. APPLICATION IN THE INDUSTRY OF CATALYTIC EXHAUST PIPES.