过氧化镉

过氧化镉
英文名	Cadmium peroxide
识别
CAS号	12139-22-9
PubChem	82941
SMILES	[O-][O-].[Cd+2];
性质
化学式	CdO2
摩尔质量	144.41 g·mol−1
外观	白色至黄色固体
密度	5.93 g·cm−3
熔点	180–200 °C（分解）
溶解性（水）	难溶
	若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。

过氧化镉是镉的过氧化物，化学式 CdO₂。

制备

过氧化镉可以由镉盐（例如乙酸镉、硝酸镉或硫酸镉）和大量的氨水反应生成 Cd(NH₃)₄²⁺阳离子后，再加入30% 过氧化氢，产生过氧化镉的奶油色沉淀。^[2]^[3]

{\ce {CdSO4 + 2 NH4OH + H2O2 -> CdO2 + (NH4)2SO4 + 2 H2O}}

它也可以由金属镉或氧化镉直接和过氧化氢反应而成：^[1]^[4]

{\ce {CdO + H2O2 -> CdO2 + O2}}

过氧化镉还可以由硝酸镉和超氧化钾在液氨中反应而成，此反应可以得到无水过氧化镉。^[5]

性质

过氧化镉是白色至黄色的粉末，在室温下缓慢分解，难溶于水。它和稀酸反应，产生对应的镉盐和过氧化氢。^[1]过氧化镉加热到180 °C时分解成氧化镉和氧气：^[2]

{\ce {2 CdO2 -> 2 CdO + O2}}

过氧化镉呈黄铁矿结构，空间群 Pa3 (No. 205)。它的二水合物在110 °C下失水。^[2]

用处

过氧化镉可用来生产用于光学用途的氧化镉薄膜。^[6]

参考资料

^ ^1.0 ^1.1 ^1.2 ^1.3 Milan Pušelj, Zvonimir Ban, Jasmina Morvaj, On the Peroxydes of Zinc and Cadmium: 283–288, 1985, ISSN 0011-1643, OCLC 664150129
^ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 Hoffman, C. W. W.; Ropp, R. C.; Mooney, R. W. Preparation, Properties and Structure of Cadmium Peroxide. Journal of the American Chemical Society (American Chemical Society (ACS)). 1959, 81 (15): 3830–3834. ISSN 0002-7863. doi:10.1021/ja01524a008.
^ Macintyre, J. E.; Chapman and Hall. Dictionary of inorganic compounds. London: Chapman & Hall. 1992: 2805. ISBN 0-412-30120-2. OCLC 26338506.
^ Saxena, P. B. Chemistry of interhalogen compounds. New Delhi: Discovery Publishing House. 2007: 37. ISBN 81-8356-243-4. OCLC 878412232.
^ Vannerberg, Nils-Gösta. Peroxides, Superoxides, and Ozonides of the Metals of Groups Ia, IIa, and IIb. Progress in Inorganic Chemistry. Hoboken, NJ, USA: John Wiley & Sons, Inc. 2007-03-09. ISSN 1934-483X. doi:10.1002/9780470166055.ch3.
^ E. Campos-González, A. Guillén-Cervantes, J. Santoyo-Salazar, O. Zelaya-Ángel, L. E. Ramírez-Velázquez, J. Santos-Cruz, S. A. Mayén-Hernández, F. de Moure-Flores, M. de la L. Olvera, G. Contreras-Puente, E. Campos-González, A. Guillén-Cervantes, J. Santoyo-Salazar, O. Zelaya-Ángel, L. E. Ramírez-Velázquez, J. Santos-Cruz, S. A. Mayén-Hernández, F. de Moure-Flores, M. de la L. Olvera, G. Contreras-Puente, Growth of CdO films from CdO2 films by chemical bath deposition: Influence of the concentration of cadmium precursor: 25–29, 2015, ISSN 1665-3521, OCLC 1115991850

[Pušelj-1] 1.0 ^1.1 ^1.2 ^1.3 Milan Pušelj, Zvonimir Ban, Jasmina Morvaj, On the Peroxydes of Zinc and Cadmium: 283–288, 1985, ISSN 0011-1643, OCLC 664150129

[Hoffmann-2] 2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 Hoffman, C. W. W.; Ropp, R. C.; Mooney, R. W. Preparation, Properties and Structure of Cadmium Peroxide. Journal of the American Chemical Society (American Chemical Society (ACS)). 1959, 81 (15): 3830–3834. ISSN 0002-7863. doi:10.1021/ja01524a008.

[Jane_E._Macintyre-3] Macintyre, J. E.; Chapman and Hall. Dictionary of inorganic compounds. London: Chapman & Hall. 1992: 2805. ISBN 0-412-30120-2. OCLC 26338506.

[4] Saxena, P. B. Chemistry of interhalogen compounds. New Delhi: Discovery Publishing House. 2007: 37. ISBN 81-8356-243-4. OCLC 878412232.

[5] Vannerberg, Nils-Gösta. Peroxides, Superoxides, and Ozonides of the Metals of Groups Ia, IIa, and IIb. Progress in Inorganic Chemistry. Hoboken, NJ, USA: John Wiley & Sons, Inc. 2007-03-09. ISSN 1934-483X. doi:10.1002/9780470166055.ch3.

[6] E. Campos-González, A. Guillén-Cervantes, J. Santoyo-Salazar, O. Zelaya-Ángel, L. E. Ramírez-Velázquez, J. Santos-Cruz, S. A. Mayén-Hernández, F. de Moure-Flores, M. de la L. Olvera, G. Contreras-Puente, E. Campos-González, A. Guillén-Cervantes, J. Santoyo-Salazar, O. Zelaya-Ángel, L. E. Ramírez-Velázquez, J. Santos-Cruz, S. A. Mayén-Hernández, F. de Moure-Flores, M. de la L. Olvera, G. Contreras-Puente, Growth of CdO films from CdO2 films by chemical bath deposition: Influence of the concentration of cadmium precursor: 25–29, 2015, ISSN 1665-3521, OCLC 1115991850

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