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The invention relates to a method for preparing barium dititanate by a hydrothermal method. The method comprises the following steps of firstly, mixing barium hydroxide monohydrate and sodium hydroxide in deionized water, and fully mixing to obtain a mixed solution; secondly, dropping titanium tetrachloride in the mixed solution in the first step to obtain a reacting solution in a vacuum glove box; thirdly, adding the prepared reacting solution in a polytetrafluoroethylene liner, and placing the liner in a hydrothermal reactor for reacting; fourthly, centrifugally cleaning and drying a product obtained by reacting to obtain a precursor; fifthly, performing heat treatment on the precursor in a muffle furnace to obtain the barium dititanate. The method disclosed by the invention has the beneficial effects that higher-purity barium dititanate powder can be obtained, and the higher-purity barium dititanate powder is further prepared by sintering into barium dititanate ceramics. According to the method disclosed by the invention, no high pressure is needed, the required equipment is simple, and the cost is lower.
The invention relates to a method for preparing barium dititanate by a hydrothermal method. The method comprises the following steps of firstly, mixing barium hydroxide monohydrate and sodium hydroxide in deionized water, and fully mixing to obtain a mixed solution; secondly, dropping titanium tetrachloride in the mixed solution in the first step to obtain a reacting solution in a vacuum glove box; thirdly, adding the prepared reacting solution in a polytetrafluoroethylene liner, and placing the liner in a hydrothermal reactor for reacting; fourthly, centrifugally cleaning and drying a product obtained by reacting to obtain a precursor; fifthly, performing heat treatment on the precursor in a muffle furnace to obtain the barium dititanate. The method disclosed by the invention has the beneficial effects that higher-purity barium dititanate powder can be obtained, and the higher-purity barium dititanate powder is further prepared by sintering into barium dititanate ceramics. According to the method disclosed by the invention, no high pressure is needed, the required equipment is simple, and the cost is lower.
Method for preparing barium dititanate by hydrothermal method
2015-07-29
Patent
Electronic Resource
English
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