For faster navigation, this Iframe is preloading the Wikiwand page for 硒酸铁.

硒酸铁

硒酸铁


英文名 iron(III) selenate
识别
CAS号 13718-77-9(无水)  checkY
166547-62-2(九水)  checkY
性质
化学式 Fe2O12Se3
摩尔质量 540.56 g·mol−1
外观 暗黄色固体(无水)[1]
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

硒酸铁是一种无机化合物,化学式为Fe2(SeO4)3,存在无水物和九水合物。硒酸铁的热稳定性比对应的硫酸铁差。[1]

制备及性质

[编辑]

无水硒酸铁可由草酸亚铁硒酸按化学计量比在450 K进行水热反应得到,无水物的空间群为P21/n。[2]九水合硒酸铁可以在一般条件(22 °C,1 bar)下从硒酸酸化的水溶液中结晶出来,晶体属P31c空间群。[3]

九水合物在45~200 °C时失水分解,分解过程中生成四水、二水和一水合物,伴随着部分六价硒还原为四价硒,230 °C时生成无水物,390 °C时无水物分解,490~640 °C经过亚硒酸-硒酸盐,最终生成氧化铁[1]

硒酸铁可以形成复盐,如CsFe(SeO4)2·12H2O。[4]

参考文献

[编辑]
  1. ^ 1.0 1.1 1.2 Samplavskaya, K. K.; Selivanova, N. M.; Mazepova, V. I. Thermal stability of iron selenate(俄文). Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya, 1964. 7 (4): 540-543. ISSN: 0579-2991.
  2. ^ Gerald Giester, Manfred Wildner. Synthesis and crystal structure of monoclinic Fe2(SeO4)3. Monatshefte für Chemie Chemical Monthly. 1991, 122 (8-9): 617–623 [2020-05-29]. ISSN 0026-9247. doi:10.1007/BF00811460 (英语). 
  3. ^ Giester, G.; Miletich, R. Crystal structure and thermal decomposition of the coquimbite-type compound Fe2(SeO4)​3·9H2O. Neues Jahrbuch fuer Mineralogie, Monatshefte, 1995. 5: 211-223. ISSN: 0028-3649.
  4. ^ Stephen P. Best, J. Bruce Forsyth. Stereochemistry of tervalent aqua ions: low-temperature neutron diffraction structures of CsFe(SO 4 ) 2 ·12H 2 O and CsFe(SeO 4 ) 2 ·12H 2 O. J. Chem. Soc., Dalton Trans. 1990, (2): 395–400 [2020-05-29]. ISSN 0300-9246. doi:10.1039/DT9900000395 (英语). 
{{bottomLinkPreText}} {{bottomLinkText}}
硒酸铁
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?