Английская Википедия:Holmium acetate

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Holmium in acetic acid

Holmium acetate is the acetate salt of holmium, with a chemical formula of Ho(CH3COO)3.

Preparation

Holmium acetate can be obtained by dissolving holmium carbonate in acetic acid: [1]

Ho2(CO3)3 + 6 CH3COOH → 2 (CH3COO)3Ho + 3 H2O + 3 CO2

Dissolving holmium oxide in acetic acid at a pH of 4 will form the tetrahydrate of holmium acetate (Ho2(CH3COO)6·4H2O):[2]

Ho2O3 + 6 CH3COOH → 2 Ho(CH3COO)3 + 3 H2O

Physical properties

Holmium acetate hemihepthydate decomposes at 105 °C, forming into a hemihydrate, further decomposing at 135 °C into an anhydride. Further adding heat will form Ho(OH)(CH3COO)2, HoO(CH3COO) then Ho2O2CO3, forming holmium oxide at 590 °C.[3]

Applications

Holmium acetate is used in the manufacture of ceramics, glass, phosphors, metal halide lamps, and as a dopant in garnet lasers. It is also used in nuclear reactors to keep the chain reaction in check.[4]

References

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External reading

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Шаблон:Holmium compounds Шаблон:Acetates

  1. Chen, Jiayun; Yu, Zhicun; Jiang, Xin; Xu, Jianwen. 醋酸钬晶体的制作方法 (lit. Preparation of holmium acetate crystals). CN 103360234A. 2012
  2. Шаблон:Cite journal
  3. Шаблон:Cite journal
  4. Шаблон:Cite web