| 摘要 |
PURPOSE:To produce the titled potassium titanium bronze in a short time without using a vacuum vessel, by mixing a titanium dioxide-forming compound with potassium oxide component-forming compound at a specific ratio and heating the resultant mixture under specific conditions. CONSTITUTION:Titanium dioxide or a compound capable of forming titanium dioxide by heating is mixed with a potassium compound capable of forming a potassium oxide component by heating at 1/7.9-1/13, preferably 1/8-1/10 molar ratio (K2O/TiO2). A carbonate, oxalate, etc., may be used as the potassium compound. Both raw materials to be used are in the form of powder and uniformly mixed with an alcohol, etc. The resultant mixture is suitably dried and put in a vessel and air is replaced with a reducing gas. The mixture is heated at 950-1,300 deg.C, preferably 950-1,200 deg.C for about 4-8hr while flowing there reducing gas. Thereby, the aimed hollandite type potassium titanium bronze expressed by the general formula KxTi8O16 (x is 0.8-1.1) is produced.
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