in water solution of Zr dioxide hydrate (1 mol ZrO2) in a hot hydrous solution of KHC2O4 (2 mol); formation of the oxide oxalate; formation of the hydroxide and the tetraoxalate on cooling down;; evaporation and cooling down; crystallisation; mechanical separation from the crystals of the 5 hydrate; washing and drying on air;;
参考文献
Mandl, A.
Z. Anorg. Chem., 1903 , vol. 37, p. 252 - 302
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Gmelin Handbook: Zr: MVol., 167, page 417 - 419
Dhar
Verslag van de Gewone Vergadering van de Afdeling Natuurkunde, Koninklijke Nederlandse Akademie van Wetenschappen, vol. 29, p. 1027
Chem. Zentralbl., 1922 , vol. 93, # I p. 398
