in neat (no solvent) heating in a dry Ar-stream to 810°C for 0.5h (Pt-vessel):;
参考文献
Asker, W. J.; Wylie, A. W.
Australian Journal of Chemistry, 1965 , vol. 18, p. 959 - 968
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Gmelin Handbook: Sc: MVol.C3, 6.2.5.4.3.5.1, page 181 - 181