Terbium(III) oxide

Terbium(III) oxide, also known as terbium sesquioxide, is a sesquioxide of the rare earth metal terbium, having chemical formula Tb
₂O
₃. It is a p-type semiconductor, which conducts protons, which is enhanced when doped with calcium. It may be prepared by the reduction of Tb
₄O
₇ in hydrogen at 1300 °C for 24 hours.

Tb₄O₇ + H₂ → 2 Tb₂O₃ + H₂O

It is a basic oxide and easily dissolved to dilute acids, and then almost colourless terbium salt is formed.

Tb₂O₃ + 6 H⁺ → 2 Tb³⁺ + 3 H₂O

The crystal structure is cubic and the lattice constant is a = 1057 pm.

References

1. Terbium(III,IV) oxide
2. Terbium
3. Terbium(IV) oxide
4. Terbium oxide
5. Terbium compounds
6. Terbium(III) chloride
7. Dysprosium(III) oxide
8. Gadolinium(III) oxide
9. Terbium(III) oxalate
10. Terbium(III) iodide
11. Terbium(III) nitrate
12. Terbium(III) bromide
13. Trioxide
14. Holmium(III) oxide
15. List of inorganic compounds
16. Terbium(III) perchlorate
17. List of CAS numbers by chemical compound
18. Lanthanide
19. Oxidation state
20. Chromium