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A kind of preparation method of potassium titanate
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A technology of potassium titanate and potassium bicarbonate, applied in the directions of titanate, alkali metal titanate, chemical instruments and methods, etc., can solve the problems of large environmental pollution, high energy consumption, and high yield, so as to avoid sewage Emissions, diameter uniformity, cost reduction effects
Active Publication Date: 2019-06-18
句容亿格纳米材料厂
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Embodiment 1
[0022] A preparation method of potassium titanate, comprising the following steps:
[0023] (1) Potassiumbicarbonate is dissolved in water to make a saturated solution;
[0025] (3) Seal and heat the reactor to 180°C with a heating rate of 2°C / min, keep it warm for 40h, and carry out hydrothermal reaction;
[0026] (4) Cool the product obtained in step (3) to room temperature, separate the solid from the liquid, wash until neutral, and dry at 100°C to obtain the final product. The yield is 53%, the average diameter is 10nm, and the average length is 1μm.
Embodiment 2
[0028] A preparation method of potassium titanate, comprising the following steps:
[0029] (1) Potassium carbonate is dissolved in water to make a saturated solution;
[0031] (3) Seal and heat the reactor to 150°C with a heating rate of 3°C / min, keep it warm for 24 hours, and carry out hydrothermal reaction;
[0032] (4) Cool the product obtained in step (3) to room temperature, separate the solid from the liquid, wash until neutral, and dry at 80°C to obtain the final product. The yield is 67%, the average diameter is 20nm, and the average length is 2μm.
Embodiment 3
[0034] A preparation method of potassium titanate, comprising the following steps:
[0035] (1) Potassium carbonate is dissolved in water to make a saturated solution;
[0037] (3) Seal and heat the reactor to 150°C with a heating rate of 4°C / min, keep it warm for 24 hours, and carry out hydrothermal reaction;
[0038] (4) Cool the product obtained in step (3) to room temperature, separate the solid from the liquid, wash until neutral, and then dry at 80-100°C to obtain the product. The yield is 81%, the average diameter is 30nm, and the average length is 5μm.
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technical field [0001] The invention belongs to the field of nanometer material manufacture, and in particular relates to a preparation method of potassium titanate. Background technique [0002] Potassiumtitanate fibers were originally developed by NASA as insulation for the nozzles of Saturn rockets. Potassium titanate fiber is a new needle-like short fiber with excellent wear resistance, heat resistance, corrosion resistance and high mechanical strength. [0003] Most of the preparation methods in the prior art are produced by heating titanium dioxide and potassium carbonate or potassium bicarbonate until melting and reacting, and then pulverizing after cooling to obtain potassium titanate. This method has high energy consumption, poor whisker quality, low yield and high environmental pollution. There is also the preparation of potassium titanate by hydrothermal method of titanium dioxide and potassium hydroxide. Although the energy consumption is low and the quality i...
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