Nanometer boehmite and preparation method thereof
A nano-boehmite and hydrothermal reaction technology, applied in the field of boehmite, can solve the problems of difficult industrial production, poor quality stability, and few product types, so as to avoid the use of strong acid and strong alkali, save costs, eliminate The effect of safety hazards
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[0024] Example 1
[0025] A kind of nano boehmite, using the following raw material ratio:
[0026]
[0027] The preparation method of nano boehmite includes the following steps:
[0028] (1) Add pseudo-boehmite to deionized water at room temperature, stir mechanically for 15 minutes, add nitric acid, and continue stirring for 15 minutes;
[0029] (2) Add 3-aminopropyltriethoxysilane and continue stirring for 30 minutes;
[0030] (3) Add the material liquid to a 1000ml autoclave, raise the temperature to 190℃, and keep it warm for 3 hours;
[0031] (4) Cool the material liquid to below 50°C, discharge the material, wash the material liquid with deionized water to a conductivity value of less than 300μS / cm, and obtain white powder A after spray drying.
Example Embodiment
[0032] Example 2
[0033] A kind of nano boehmite, using the following raw material ratio:
[0034]
[0035] The preparation method of nano boehmite includes the following steps:
[0036] (1) Add pseudo-boehmite to deionized water at room temperature, stir mechanically for 15 minutes, add acetic acid, and continue stirring for 30 minutes;
[0037] (2) Add 3-aminopropyltriethoxysilane and continue stirring for 30 minutes;
[0038] (3) Put the material liquid into a 1000ml autoclave, raise the temperature to 210°C, keep it warm for 5 hours;
[0039] (4) Cool the material liquid to below 50°C, discharge the material, wash the material liquid with deionized water to a conductivity value of less than 300μS / cm, and obtain white powder B after spray drying.
Example Embodiment
[0040] Example 3
[0041] A kind of nano boehmite, using the following raw material ratio:
[0042]
[0043] The preparation method of nano boehmite includes the following steps:
[0044] (1) Add pseudo-boehmite to deionized water at room temperature, stir mechanically for 15 minutes, add sulfuric acid, and continue stirring for 30 minutes;
[0045] (2) Add sodium carbonate and continue stirring for 30 minutes;
[0046] (3) Add the material liquid to a 1000ml autoclave, raise the temperature to 170°C, keep it warm for 6 hours;
[0047] (4) Cool the material liquid to below 50°C, discharge the material, wash the material liquid with deionized water to a conductivity value of less than 300μS / cm, and obtain white powder C after spray drying.
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