查看“︁三氧化二镅”︁的源代码

{{Chembox
| Name = 
| ImageFile = Kristallstruktur Lanthanoid-C-Typ.png
| OtherNames = 氧化鋂(III)
| IUPACName = 
| SystematicName = 
| Section1 = {{Chembox Identifiers
| PubChem = 22506319
| CASNo = 12254-64-7
| StdInChI=1S/2Am.3O/q2*+3;3*-2
| StdInChIKey = HPWBMQLLXMZFDK-UHFFFAOYSA-N
| SMILES = [O-2].[O-2].[O-2].[Am+3].[Am+3]
 }}
| Section2 = {{Chembox Properties
| Am=2 | O=3
| Appearance = 
| Density = 11.77
| MeltingPtC = 2205
| BoilingPt = 
| Solubility = 
}}
| Section3 = {{Chembox Structure
| CrystalStruct = 三方晶系，[[皮尔逊符号|hP5]]
| SpaceGroup = P{{overline|3}}m1, No. 164
| LattConst_a = 381.7 pm
| LattConst_c = 597.1 pm<ref name="cry">{{cite journal |author1=Christine Guéneau |author2=Alain Chartier |author3=Paul Fossati |author4=Laurent Van Brutzel |author5=Philippe Martin |title=Thermodynamic and Thermophysical Properties of the Actinide Oxides |journal=Comprehensive Nuclear Materials 2nd Ed. |date=2020 |volume=7 |pages=111-154 |doi=10.1016/B978-0-12-803581-8.11786-2 |language=en}}</ref>}}
| Section4 = 
| Section7 = 
| Section8 = {{Chembox Related
| OtherCpds = [[一氧化镅]]<br>[[二氧化镅]]
| OtherCations = [[三氧化二锔]]
 }}
}}
'''三氧化二鋂'''是一种[[无机化合物]]，化学式为Am<sub>2</sub>O<sub>3</sub>，其颜色取决于[[晶体结构|晶型]]，六方型的是棕色的，而立方型的是红褐色的，后者在800 °C转化为前者。<ref name="chik"/>它可溶于酸。<ref>{{cite book |last1=Lide |first1=David R. |title=CRC Handbook of Chemistry and Physics: A Ready-reference Book of Chemical and Physical Data |date=1995 |publisher=CRC Press |isbn=978-0-8493-0595-5 |page=4-38 |url=https://books.google.com.au/books?id=q2qJId5TKOkC&pg=PP890 |language=en}}</ref>由於[[镅|鋂]]的所有[[同位素]]是由人工生產的，因此氧化鋂(III)不存在于[[自然]]界。

==制备==
三氧化二镅可由[[氢气]]在600 °C还原[[二氧化镅]]制得。<ref name="chik">{{cite journal |last1=Chikalla |first1=T.D. |last2=Eyring |first2=L. |title=Phase relationships in the americium-oxygen system |journal=Journal of Inorganic and Nuclear Chemistry |date=January 1968 |volume=30 |issue=1 |pages=133–145 |doi=10.1016/0022-1902(68)80072-7}}</ref>
:<chem>2 AmO2 + H2 -> Am2O3 + H2O</chem>

==参考文献==
{{Reflist}}

{{镅化合物}}
{{氧化物}}
[[Category:镅化合物]]
[[Category:氧化物]]