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三氧化二铈

三氧化二鈰
IUPAC名
Cerium(III) oxide
别名 氧化鈰(Ⅲ)
识别
CAS号 1345-13-7  checkY
SMILES
 
  • [O-2].[O-2].[O-2].[Ce+3].[Ce+3]
性质
化学式 Ce2O3
摩尔质量 328.24 g·mol⁻¹
外观 白色固體
密度 6.2 g/cm3
熔点 2177℃
溶解性 不溶於,但可溶於硫酸
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

三氧化二鈰(化學式:Ce2O3),是稀土元素(Ⅲ)的氧化物,為白色固體,实际上是一个组成在CeO1.50~1.53的非整比化合物。难溶于水和碱,可溶于酸。它不如二氧化铈(CeO2)常见。

製備

[编辑]

二氧化鈰在高温时被还原制得。比如以一氧化碳为还原剂时,反应式为:

4 CeO2 + 2 CO → 2 Ce2O3 + 2 CO2

參見

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三氧化二铈
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