Preparation method of high-gum-solubility pseudoboehmite
A technique of pseudo-boehmite and high glue is applied in the field of preparation of pseudo-boehmite with high peptization, can solve the problems of low crystal phase purity, non-uniform pore size, low peptization performance, etc., and achieves low preparation cost , the effect of high preparation efficiency and simplified preparation process
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[0018] Example 1:
[0019] Put 10 grams of metallic aluminum, 0.02 grams of n-hexanol aluminum and 63 grams of n-hexanol into a four-necked flask, heat to 120°C to start the reaction, and slowly drop 126 grams of n-hexanol into the flask when a large number of bubbles are generated in the flask. After the reaction, 102 g of n-hexanol was added to the flask, the temperature was raised to 120° C., and aluminum tri-n-hexanoxide was obtained by filtration. Add 30 mL of deionized water to the flask, raise the temperature to 85° C., add dropwise aluminum tri-n-hexanoxide solution at 85° C. into the flask while stirring, and complete the dripping in 30 minutes. The n-hexanol produced by the hydrolysis of aluminum alkoxide is drawn out from the flask. Add 270 mL of deionized water to the flask and raise the temperature to 85° C. After aging for 6 hours, spray drying to obtain highly peptized pseudo-boehmite.
Example Embodiment
[0020] Example 2:
[0021] Put 10 grams of metallic aluminum, 0.02 grams of n-hexanol and 63 grams of n-hexanol into a four-necked flask, and heat to 130°C to start the reaction. When a large number of bubbles are generated in the flask, 126 grams of n-hexanol is slowly dropped into the flask. After the reaction, 102 grams of n-hexanol was added to the flask, the temperature was raised to 120° C., and aluminum tri-n-hexanoxide was obtained by filtration. Add 30 mL of deionized water to the flask, raise the temperature to 85° C., add dropwise aluminum tri-n-hexanoxide solution at 85° C. into the flask while stirring, and complete the dripping in 30 minutes. The n-hexanol produced by the hydrolysis of aluminum alkoxide is drawn out from the flask. 400mL of deionized water was added to the flask and the temperature was raised to 85°C. After aging for 8 hours, spray-dried to obtain highly peptized pseudo-boehmite.
Example Embodiment
[0022] Example 3:
[0023] Put 10 grams of metallic aluminum, 0.02 grams of n-hexanol aluminum and 63 grams of n-hexanol into a four-necked flask, heat it to 140°C to start the reaction, and slowly drop 126 grams of n-hexanol into the flask when a large number of bubbles are generated in the flask. After the reaction, 102 grams of n-hexanol was added to the flask, the temperature was raised to 120° C., and aluminum tri-n-hexanoxide was obtained by filtration. Add 30 mL of deionized water to the flask, raise the temperature to 85° C., add dropwise aluminum tri-n-hexanoxide solution at 85° C. into the flask while stirring, and complete the dripping in 30 minutes. The n-hexanol produced by the hydrolysis of aluminum alkoxide is drawn out from the flask. 600mL of deionized water was added to the flask and the temperature was raised to 85°C. After aging for 12 hours, spray-dried to obtain highly peptized pseudo-boehmite.
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