sesquioxide

1.High purity titanium sesquioxide was obtained by the reaction of high purity hydrogen and titanium dioxide in the presence of titanium tetrachloride.

用高纯氢和高纯二化钛，在四氯化钛存在下，可高纯化二钛。

2.The indium sesquioxide with over 99% purity can be prepared by a decomposition of nitric acid. The method was characterized by fewer equipments, simple operation, low cost and quick yield.

采用硝分解法可制取纯度高于99%化二铟.本法具有设备少、操作简单、成本低、见效快等优点.