Method of precipitating metal titanate powders

A method of producing alkaline-earth metal titanate in powder form, comprising

• mixing titanium alkoxide and an acid to form an titanium acylate solution,
• adding to said acidic solution water and a water insoluble alkaline-earth metal carbonate in quantities sufficient to cause the alkaline-earth metal in the carbonate to dissolve in the acidic solution,
• thereafter adding an alkaline hydroxide to the solution to raise the solution pH to 13 or above, and to precipitate alkaline-earth metal titanate crystals in the solution,
• filtering the crystals from the solution to produce a filter cake, and
• drying and washing the cake to produce the the desired powder.

A method of producing alkaline earth-metal titanate chemical powders by direct precipitation from a chemical reaction product produced without the application of any heat other than that generated by the heat of reaction, comprising

• mixing water, glacial acetic acid and an organic titanium compound in ratios of approximately 1:3:1.5 to form a clear, acidic titanium acylate solution,
• mixing a water insoluble alkaline earth-metal carbonate in the acidic solution effectively to dissolve the alkaline earth-metal of the carbonate in the solution,
• thereafter adding an alkaline hydroxide to said mixture in quantities sufficient to raise the solution pH to 13 or above, and to cause alkaline earth-metal titanate crystals to form in the solution, and
• filtering said crystals from the solution to form a filter cake comprising an alkaline earth-metal titanate in powder form.