Oxygen-deficient refractory oxide(s) with good catalytic properties under fluctuating conditions

摘要

Refractory mixed oxides of cerium, zirconium and a rare earth metal of formula (I) are new; Ce1-(x+y)ZrxRyO2-z in which R is a rare earth metal; z is an oxygen deficiency; x is 0.15-0.70; y is 0.05-0.25; and (x + y) is 0.20-0.95.