Alumina nanobelt and production method thereof
A nano-alumina, aluminum source technology, applied in the direction of alumina/aluminum hydroxide, can solve the problems of adsorption capacity, small specific surface area, limitation, etc., and achieve the effects of low cost, easy operation and mild conditions
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Embodiment 1
[0025] (1) prepare the mixed solution of aluminum chloride, polyethylene glycol (viscosity average molecular weight 100000), urea and water at room temperature, in the mixed solution, polyethylene glycol content is 0.15wt%, urea and aluminum chloride total content It is 15wt% (the molar ratio of urea to aluminum chloride is 3), and the water content is 84.85wt%.
[0026] (2) The mixture of step (1) was placed in a hydrothermal kettle at 140° C. for hydrothermal reaction under autogenous pressure for 48 hours.
[0027] (3) After the mixture in step (2) is filtered, it is washed with water until the pH value of the washing solution reaches or approaches neutrality. The washed product was dried at 100°C for 10 hours, and finally calcined at 550°C for 3 hours to obtain alumina nanobelts.
[0028] The morphology of the aluminum oxide nanoribbon is relatively regular and spindle-shaped, which is a ribbon-like object with a wide middle and narrow ends. The specific surface area of ...
Embodiment 2
[0030] (1) prepare the mixed solution of aluminum chloride, polyethylene glycol (viscosity average molecular weight 500000), urea and water at room temperature, in the mixed solution, polyethylene glycol content is 1wt%, and urea and aluminum chloride total content are 30wt% (the molar ratio of urea to aluminum chloride is 4), and the water content is 69wt%.
[0031] (2) The mixture of step (1) was placed in a hydrothermal kettle at 170° C. for hydrothermal reaction under autogenous pressure for 32 hours.
[0032] (3) After the mixture in step (2) is filtered, it is washed with water until the pH value of the washing solution reaches or approaches neutrality. The washed product was dried at 100°C for 10 hours, and finally calcined at 650°C for 3 hours to obtain alumina nanobelts.
[0033] The surface of the aluminum oxide nanobelt is porous, the shape is relatively regular, and it is spindle-shaped. It is a ribbon with a wide middle and narrow ends at both ends. 2 / g, the ri...
Embodiment 3
[0035] (1) prepare the mixed solution of aluminum chloride, polyethylene glycol (viscosity-average molecular weight 1,000,000), urea and water at room temperature, in the mixed solution, polyethylene glycol content is 3wt%, and urea and aluminum chloride total content are 40wt% (the molar ratio of urea to aluminum chloride is 5), and the water content is 57wt%.
[0036] (2) The mixture of step (1) was placed in a hydrothermal kettle at 190° C. for hydrothermal reaction under autogenous pressure for 24 hours.
[0037] (3) After the mixture in step (2) is filtered, it is washed with water until the pH value of the washing solution reaches or approaches neutrality. The washed product was dried at 100°C for 10 hours, and finally calcined at 800°C for 2 hours to obtain alumina nanobelts.
[0038] The surface of the aluminum oxide nanobelt is porous, the shape is relatively regular, and it is spindle-shaped. It is a ribbon-shaped object with a wide middle and narrow ends. 2 / g, ho...
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