查看“︁氧化镝”︁的源代码

{{chembox
| Watchedfields = changed
| verifiedrevid = 440262479
| ImageFile = Dy2O3powder.jpg
| ImageFile2 =Tl2O3structure.jpg
| Section1 = {{Chembox Identifiers
|   ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 3296880
| InChI = 1/2Dy.3O/rDy2O3/c3-1-5-2-4
| SMILES = O=[Dy]O[Dy]=O
| InChIKey = NLQFUUYNQFMIJW-XDEDGNAWAZ
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/2Dy.3O
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = NLQFUUYNQFMIJW-UHFFFAOYSA-N
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo = 1308-87-8
| PubChem = 159370
  }}
| Section2 = {{Chembox Properties
|   Formula = Dy<sub>2</sub>O<sub>3</sub>
|   MolarMass = 372.998 g/mol
|   MeltingPt = 2408 °C<ref>{{Cite web |url=http://www.webelements.com/compounds/dysprosium/didysprosium_trioxide.html |title=Webelements Dysprosium trioxide |accessdate=2009-11-27 |archive-date=2009-10-21 |archive-url=https://web.archive.org/web/20091021052724/http://www.webelements.com/compounds/dysprosium/didysprosium_trioxide.html |dead-url=no }}</ref>
|   Density = 7.80 g/cm<sup>3</sup>
|   Appearance = 白色粉末
|   Solubility = 难溶
  }}
| Section3 = {{Chembox Structure
|   CrystalStruct = [[立方晶系]]、[[皮尔逊符号|cI80]]
|   SpaceGroup = Ia-3, No. 206<ref>{{cite journal| journal = J. Phys. F| year = 1973 | volume = 3 | pages = 1–5| title = The observation of face centred cubic Gd, Tb, Dy, Ho, Er and Tm in the form of thin films and their oxidation| author = Curzon A.E., Chlebek H.G.| doi=10.1088/0305-4608/3/1/009}}</ref>
  }}
| Section7 = {{Chembox Hazards
|   ExternalMSDS = [http://www.espimetals.com/msds's/dysprosiumoxide.pdf External MSDS]
|   LD50 = ＞1000 mg/kg (大鼠经口)<ref name="msds">[http://www.espimetals.com/msds's/dysprosiumoxide.pdf MSDS]</ref>
|   MainHazards = 无毒}}
}}
'''氧化镝'''，化学式Dy<sub>2</sub>O<sub>3</sub>。

==性质==
白色结晶粉末，不溶于水，溶于[[酸]]和[[乙醇]]。露置于空气中时易吸收[[二氧化碳]]而转变为[[碳酸镝]]。

==制备==
[[硝酸镝]]溶液与[[氢氧化钠]]溶液反应生成[[氢氧化镝]]，经分离后进行灼烧，得到氧化镝。
:<math>\rm \ 2Dy(OH)_3\rightarrow Dy_2O_3+3H_2O</math>

==用途==
用于制造新型光源[[镝灯]]，具有亮度高、光色好的优点。还用作[[核反应堆]]的控制材料、[[钇铁石榴石|钇铁]]和[[钇铝石榴石]]的添加元素。因有阳极发射能力，故也用作阳极涂层。

==参考资料==
{{reflist}}

{{镝化合物}}
{{氧化物}}

[[Category:镝化合物]]
[[Category:氧化物]]

{{无机化合物小作品}}