Tungsten-copper Composite Oxide Powder and Its Preparing Process

The present invention relates to a W - Cu composite oxide powder and its preparation method, the powder comprising individual particles having a copper tungstate phase and tungsten trioxide phase wherein the tungsten trioxide phase exists primarily at the surface of the individual particles. The present invention also relates to a method comprising the acid copper tungstate phase and tungsten trioxide phase W - Cu composite oxide powder, wherein the ratio by X-ray diffraction method, of tungstic acid, tungsten trioxide and copper phase, the tungsten is greater than - copper composite oxide powder has the same phase as compared to the measured ratio of the mechanical blend of tungsten and tungsten trioxide acid copper phase by X-ray diffraction.

A W - Cu composite oxide powder, which comprises individual particles having a copper tungstate phase and tungsten trioxide phase wherein the tungsten trioxide phase exists primarily at the surface of the individual particles.


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