Patent ID: 11964255
Assignee: RHODIA OPERATIONS
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  F | IPC B  F

Claim 10:
11. The mixed oxide according to claim 1, wherein the mixed oxide has one of the following compositions C1-C3:
composition C1
between 18.0 wt % and 22.0 wt % of cerium;
between 3.0 wt % and 7.0 wt % of lanthanum;
between 3.0 wt % and 7.0 wt % of yttrium;
between 0.05 wt % and 0.25 wt % of iron;
the remainder as zirconium;
composition C2
between 28.0 wt % and 32.0 wt % of cerium;
between 3.0 wt % and 7.0 wt % of lanthanum;
between 3.0 wt % and 7.0 wt % of yttrium;
between 0.05 wt % and 0.25 wt % of iron;
the remainder as zirconium;
composition C3
between 38.0 wt % and 42.0 wt % of cerium;
between 3.0 wt % and 7.0 wt % of lanthanum;
between 3.0 wt % and 6.0 wt % of yttrium;
between 0.05 wt % and 0.25 wt % of iron;
the remainder as zirconium.