Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for synthesizing nano barium titanate-based powder in water vapor
The invention discloses a method for synthesizing nano barium titanate-based powder in water vapor, which comprises the following steps of: 1, completely mixing BaO powder and TiO2 powder with the barium-titanium molar ratio of 0.99-1.06; 2, putting the mixed powder into a polytetrafluoroethylene open container, and putting the polytetrafluoroethylene open container into a stainless steel sealed sterilization high-pressure device; meanwhile, water is filled between the polytetrafluoroethylene open container and the stainless steel sealed sterilization high-pressure device; step 3, applying pressure to the water and heating to generate a water vapor atmosphere, so that BaO and TiO2 react to synthesize initial barium titanate powder, the temperature of the water vapor in the reaction process is 110-200 DEG C, and the reaction time is 1-24 hours; 4, washing the initial barium titanate powder with an acetic acid solution and deionized water or distilled water; 5, drying in a drying oven at the temperature of 30-100 DEG C; and the tetragonal-phase synthetic nano barium titanate-based powder with uniform particle size smaller than 100nm can be prepared on a large scale.
本发明公开了一种在水蒸气中合成纳米钛酸钡基粉体方法，第一步、取BaO和TiO2的钡钛摩尔比为0.99～1.06的粉体完全混合；第二步、混合粉体放入聚四氟乙烯敞口容器中，再将聚四氟乙烯敞口容器置于不锈钢密封灭菌高压器中；同时在聚四氟乙烯敞口容器与不锈钢密封灭菌高压器之间填充水；第三步、向水施加压力并加热，产生水蒸气气氛，使得BaO和TiO2发生反应合成钛酸钡初始粉体，反应过程中水蒸气的温度为110～200℃，反应时间为1～24h；第四步、先将钛酸钡初始粉体用乙酸溶液，再用去离子水或蒸馏水洗涤；第五步、在30～100℃的干燥箱内进行干燥；可规模化制备出粒径小于100nm、粒径均匀的四方相的合成纳米钛酸钡基粉体。
Method for synthesizing nano barium titanate-based powder in water vapor
The invention discloses a method for synthesizing nano barium titanate-based powder in water vapor, which comprises the following steps of: 1, completely mixing BaO powder and TiO2 powder with the barium-titanium molar ratio of 0.99-1.06; 2, putting the mixed powder into a polytetrafluoroethylene open container, and putting the polytetrafluoroethylene open container into a stainless steel sealed sterilization high-pressure device; meanwhile, water is filled between the polytetrafluoroethylene open container and the stainless steel sealed sterilization high-pressure device; step 3, applying pressure to the water and heating to generate a water vapor atmosphere, so that BaO and TiO2 react to synthesize initial barium titanate powder, the temperature of the water vapor in the reaction process is 110-200 DEG C, and the reaction time is 1-24 hours; 4, washing the initial barium titanate powder with an acetic acid solution and deionized water or distilled water; 5, drying in a drying oven at the temperature of 30-100 DEG C; and the tetragonal-phase synthetic nano barium titanate-based powder with uniform particle size smaller than 100nm can be prepared on a large scale.
本发明公开了一种在水蒸气中合成纳米钛酸钡基粉体方法，第一步、取BaO和TiO2的钡钛摩尔比为0.99～1.06的粉体完全混合；第二步、混合粉体放入聚四氟乙烯敞口容器中，再将聚四氟乙烯敞口容器置于不锈钢密封灭菌高压器中；同时在聚四氟乙烯敞口容器与不锈钢密封灭菌高压器之间填充水；第三步、向水施加压力并加热，产生水蒸气气氛，使得BaO和TiO2发生反应合成钛酸钡初始粉体，反应过程中水蒸气的温度为110～200℃，反应时间为1～24h；第四步、先将钛酸钡初始粉体用乙酸溶液，再用去离子水或蒸馏水洗涤；第五步、在30～100℃的干燥箱内进行干燥；可规模化制备出粒径小于100nm、粒径均匀的四方相的合成纳米钛酸钡基粉体。
Method for synthesizing nano barium titanate-based powder in water vapor
在水蒸气中合成纳米钛酸钡基粉体方法
22.12.2023
Patent
Elektronische Ressource
Chinesisch
Method for ultrasonically synthesizing nano barium titanate powder and application thereof
| Europäisches Patentamt | 2023
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