Germanium titanium zirconium or hafnium monoxides - by roasting mixt of metal and metal dioxide and heating under reduced pressure

摘要

Monoxides of Ge, Ti, Zr or Hf are prepd. by mixing Ge, Ti, Zr or Hf with the dioxide of the corresponding metal at a molar ratio of metal/metal oxide of 1-1.3/1 roasting the mixt. and then subjecting to subsequent thermal treatment. Gives high purity monoxides in high yields. The process is simple and suitable for industrial use.