Abstract
Co-separation of hafnium with zirconium oxychloride has been studied from 0 to 60°C with the help of175,181Hf. It was found that zirconium oxychloride undergoes two transitions, one at about 33°C and another at about 59.5°C. From the value of the partition factor it was clear that a separation method based on fractional crystallisation of the oxychloride will not be a successful line of approach. The transition points were verified by DTA study. It was found from the DTA curve that hafnium oxychloride undergoes transition near 90°C. The solubility of zirconium oxychloride and the break in the partition factor also corroborate the above findings.
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Purkayastha, B.C., Sarkar, S. & Mahapatra, N.S. Co-separation of hafnium with zirconium oxychloride using175,181Hf as radioactive tracer. J. Radioanal. Chem. 22, 83–93 (1974). https://doi.org/10.1007/BF02518094
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DOI: https://doi.org/10.1007/BF02518094