This method is introduced in Chinese patent CN1097400A. It is to add TiCl 4 to liquid paraffin or a mixed solvent of 120# gasoline and pyridine, add ethanol, and simultaneously pass ammonia, the reaction pressure is about 0.2MPa, the reaction temperature is 45°C, and the solution is When the pH reaches 8-10, the reaction is terminated. After filtration, the additive is added for hydrolysis. After separating the organic phase, it is vacuum dried or freeze-dried, then calcined and pulverized to obtain a finished nano-TiO 2 . The nano-process flow for alcoholysis production is shown in the figure below.
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