Dysprosium(III) fluoride explained

Dysprosium(III) fluoride is an inorganic compound of dysprosium with a chemical formula DyF₃.

Production

Dysprosium(III) fluoride can be produced by mixing dysprosium(III) chloride or dysprosium(III) carbonate into 40% hydrofluoric acid.^[1]

DyF₃ can also be produced by hydrothermal reaction of dysprosium nitrate and sodium tetrafluoroborate at 200 °C.^[2]

DyF₃ can also be produced when dysprosium oxide and ammonium bifluoride are mixed and heated to 300 °C until the oxide is porous, and continued to heat to 700 °C. When hydrogen fluoride is introduced, a reaction occurs:^[3]

Properties

Dysprosium(III) fluoride is a white, odorless solid that is insoluble in water. It has an orthorhombic crystal structure with the space group Pnma (space group no. 62).^[4]

Notes and References

1. Wang Ya-jun, Suo Quan-ling, Hao Dong-sheng, Liu Qian, Guo Feng. 稀土氟化物的沉淀方法及组成研究 (in Chinese) (lit. Precipitation and composition of rare earth fluorides). Chinese Rare Earths, 2000, 21 (1): 14-18.
2. 孙元平, 贾佩云, 王芳, 等. 水热条件下稀土氟化物形貌的规律性生长[J]. 中国陶瓷, 2013(6).
3. 刘文生, 云月厚, 李国栋. 干法氟化制备高纯金属镝的工艺研究[J]. 稀有金属, 2003, 27(1):154-156.
4. Book: Ans . Jean d' . Taschenbuch für Chemiker und Physiker . Lax . Ellen . 1998 . Springer . 978-3-540-60035-0 . de.