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焦磷酸钍.
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]
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 NH4H2PO4 —790℃→ 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,则可利用四氟化钍和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四氯化钍和焦磷酸钠按1:1的比例反应得到[5]。
- ^ 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)
- ^ Burdese, A.; Borlera, L. (Ric. Sci. 30 [1960] 1343/5 and references cited therein)
- ^ Burdese, A.; Borlera, L. (Ann. Chim. [Rome] 53 [1963] 344/55)
- ^ Bamberger, C. E.; Haire, R. G.; Begun, G. M.; Hellwege, H. E. (J. Less Common Met. 102 [1984] 179/86)
- ^ 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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