Abstract
GdCl3 has been prepared from high purity Gd3O3 with NH4Cl as the chlorinating agent. The optimum time, temperature, air flow rate, and the mixing ratio of Gd2O3 and NH4Cl for chlorination were determined. Almost complete conversion (99. 8%) of Gd2O3 to GdCl3 was obtained with 2.5 times or more the theoretical amount of NH4Cl and with at least a 20 hr reaction time at 250° C under a dried air flow. The excess NH4Cl was removed from the GdCl3 by sublimation at 350° C in vacuum. The resulting GdCl3 was purified to a dense crystalline GdCl3 by distillation in vacuum using Ta crucibles and condensers.
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© 1980 Plenum Press, New York
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Kim, Y.S., Planinsek, F., Beaudry, B.J., Gschneidner, K.A. (1980). Preparation and Purification of GdCl3 . In: McCarthy, G.J., Rhyne, J.J., Silber, H.B. (eds) The Rare Earths in Modern Science and Technology. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-3054-7_9
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DOI: https://doi.org/10.1007/978-1-4613-3054-7_9
Publisher Name: Springer, Boston, MA
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