Terbium Oxide (Tb4O7) Powder
Terbium oxide (Tb4O7) is one of the many terbium oxides such as Tb2O3, TbO2, and Tb6O11. It is one of the main commercial terbium compounds. Tb4O7 powder has a dark brown appearance. Tb4O7 decomposes to sesquioxide (Tb2O3) by losing oxygen at around 600 °C under the hydrogen atmosphere. It has a cubic fluorite form and stable at this form up to a pressure of ∼27 GPa. Tb4O7 powders have been used as precursors for the synthesis of lanthanide nanophosphors and superconductor materials. In addition, Tb4O7 can be used as analytical reagents for food analysis. Similar to other rare earth oxides, terbium oxide also provides interesting magnetic and optical properties. These properties of Tb4O7 are utilized in magneto-optical glasses and magneto-optical recording materials. Another important aspect of Tb4O7 is its catalytic activity. It is found to be effective for catalytic applications in automobile exhaust converter and oxidative dehydrogenation of ethane.