碳酸镭
碳酸镭是一种无机化合物,化学式为RaCO3,有强放射性。它可以形成正交晶系晶体,空间群Pmcn。[2]
碳酸镭 | |||
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英文名 | |||
识别 | |||
CAS号 | 7116-98-5 | ||
性质 | |||
化学式 | RaCO3 | ||
286.011 g·mol⁻¹ | |||
溶解性(水) | 2.1×10−4g(20 °C)[1] | ||
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
性质及用途
碳酸镭可以和酸反应,生成其它镭化合物:
- RaCO3 + 2 HNO3 → Ra(NO3)2 + 2 H2O
在室温时,碳酸镭在碳酸铵或氯化铵浓溶液中的溶解度比碳酸钡大10倍,借此可将镭与钡分离。[4]它可用于制造镭铍中子源。[5]
参考文献
- Richard C. Ropp. Encyclopedia of the Alkaline Earth Compounds. Elsevier, 2013. pp 370-371. Radium Carbonate
- Weigel, F.; Trinkl, A. Crystal chemistry of radium. V. Radium salts of inorganic anions. Radiochimica Acta, 1973. 19 (4): 199-202. ISSN: 0033-8230.
- Artem V. Matyskin, Burçak Ebin, Mikhail Tyumentsev, Stefan Allard, Gunnar Skarnemark, Henrik Ramebäck, Christian Ekberg. . Journal of Radioanalytical and Nuclear Chemistry. 2016-11, 310 (2): 589–595 [2020-12-10]. ISSN 0236-5731. doi:10.1007/s10967-016-4927-x (英语).
- Nikitin, B. A. Studies on the analytical chemistry of radium. II. Reactions of pure radium. Trav. inst. elat radium (U. S. S. R.), 1937. 3. pp 228-237. CAN31: 32676.
- Bedrich, Fridrich. Preparation of radium-beryllium neutron sources. Sb. Ref. Celostatni Radiochem. Konf., 3, Liblice, Czech., 1964. pp 135. CAN64: 90519.
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