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焦磷酸钍

焦磷酸钍

IUPAC名
Thorium(IV) metaphosphate
识别
CAS号 19183-41-6  checkY
性质
化学式 ThP2O7
摩尔质量 405.986 g·mol⁻¹
危险性
欧盟分类 放射性
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

焦磷酸钍是一种无机化合物化学式为ThP2O7,有放射性。

焦磷酸钍在810℃发生相变(由低温的β型转变为高温的α型[1]),并在1290℃分解。[2][3]

制备

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焦磷酸钍可以由磷酸二氢铵和四氟化钍高温反应得到[4]

ThF4 + 2 NH4H2PO4790℃→ ThP2O7 + 4 HF↑ + 2 NH3↑ + H2O↑

此法得到的是α-焦磷酸钍(含少量β-焦磷酸钍)。

若要得到β-焦磷酸钍,则可利用四氟化钍磷酸硼的高温反应得到。[1]

通过溶液中的反应也可以得到焦磷酸钍,如利用0.05M四氯化钍焦磷酸钠按1:1的比例反应得到[5]

参考文献

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  1. ^ 1.0 1.1 Michael Bickel. Bagnall. Gmelin Handbook of Inorganic and Organometallic Chemistry - Th SUPPLEMENT VOLUME C 8 - Compounds with Si,P,As,Sb,Bi,Ge. Springer-Verlag Berlin Heidelberg GmbH 1993. pp.116-119. 17.3.2.1.4 Thorium Diphosphate, ThP2O7 ISBN 978-3-662-06350-7; ISBN 978-3-662-06348-4(eBOOK)
  2. ^ Burdese, A.; Borlera, L. (Ric. Sci. 30 [1960] 1343/5 and references cited therein)
  3. ^ Burdese, A.; Borlera, L. (Ann. Chim. [Rome] 53 [1963] 344/55)
  4. ^ Bamberger, C. E.; Haire, R. G.; Begun, G. M.; Hellwege, H. E. (J. Less Common Met. 102 [1984] 179/86)
  5. ^ Merkusheva, S. A.; Skorik, N. A.; Kumok, V. N.; Serebrennikov, V. V. (Radiokhimiya 9 [1976] 723/5; Sov. Radiochem. [Engl. Transl.] 9 [1967] 683/5)
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焦磷酸钍
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