Cerium(III) oxide

Cerium(III) oxide, also called cerium sesquioxide, is a chemical compound made of cerium and oxygen. It has the chemical formula Ce
2
O
3
.

Uses

Cerium(III) oxide can react with oxygen in the air to make cerium(IV) oxide. This is used to reuse the cerium(IV) oxide catalyst in catalytic converters.[1]

References

  1. Peer, Michael. Recovery of Cerium from Automotive Catalytic Converters. JOM 76 (6) (2024). p. 3225–3230. doi:10.1007/s11837-024-06498-2.