Английская Википедия:Holmium acetate

Материал из Онлайн справочника
Версия от 12:48, 22 марта 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{short description|Compound of holmium}} {{Chembox | Name = Holmium acetate | ImageFile = Holmium(III) acetate.jpg | ImageSize = | ImageAlt = | IUPACName = | OtherNames = Holmium(III) acetate | Section1 = {{Chembox Identifiers | CASNo = 25519-09-9 | CASNo_Ref = {{cascite|correct|CAS}} | PubChem = 4152420 | InChI=1S/3C2H4O2.Ho/c3*1-2(3)4;/h3*1H3,(H,3,4); | InChIKey=NKWMP...»)
(разн.) ← Предыдущая версия | Текущая версия (разн.) | Следующая версия → (разн.)
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Chembox

Файл:Holmium acetic acid.jpg
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

Шаблон:Reflist

External reading

Шаблон:Refbegin

Шаблон:Refend

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