Method for preparing nano gamma-AlOOH by utilizing sodium metaaluminate solution
A technology using sodium metaaluminate and sodium metaaluminate, which is applied in the field of preparing nano-γ-AlOOH, can solve the problems of high production cost, complicated preparation materials and low production efficiency of nano-alumina oxyhydroxide, and achieve easy implementation and popularization, The effect of simplifying the preparation process and requiring less equipment
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Embodiment 1
[0048] A method for preparing nanometer gamma-AlOOH with sodium metaaluminate solution, comprising the steps:
[0049] Step 1, control the temperature of the sodium metaaluminate solution to 25°C, then add 0.29 mol of hydrogen peroxide solution to 0.26 mol of sodium metaaluminate solution, and after fully reacting for 5 minutes, collect the solid product in the reaction solution; wherein, The concentration of the sodium metaaluminate solution is 70g / L, the mass concentration of the hydrogen peroxide solution is 30%, and the ratio of the moles of aluminum in the sodium metaaluminate solution to the moles of hydrogen peroxide in the hydrogen peroxide solution is 1 : 22.5;
[0050] Step 2, washing the solid product until the pH of the product suspension is 7;
[0051] Step 3, drying the product suspension in a constant temperature drying oven at 105° C. for 12 hours to prepare nanometer γ-AlOOH.
[0052] The nano γ-AlOOH prepared in this example is orthogonal γ-aluminum oxyhydr...
Embodiment 2
[0054] A method for preparing nanometer gamma-AlOOH with sodium metaaluminate solution, comprising the steps:
[0055] Step 1, control the temperature of the sodium metaaluminate solution to 25°C, then add 0.32 mol of hydrogen peroxide solution to 0.26 mol of sodium metaaluminate solution, and after fully reacting for 5 minutes, collect the solid product in the reaction solution; wherein, The concentration of the sodium metaaluminate solution is 70 / L, the mass concentration of the hydrogen peroxide solution is 30%, and the ratio of the moles of aluminum in the sodium metaaluminate solution to the moles of hydrogen peroxide in the hydrogen peroxide solution is 1 : 25;
[0056] Step 2, washing the solid product until the pH of the product suspension is 7;
[0057] Step 3, drying the product suspension in a constant temperature drying oven at 105° C. for 12 hours to prepare nanometer γ-AlOOH.
[0058] The XRD spectrum of the nanometer γ-AlOOH prepared in this embodiment is simi...
Embodiment 3
[0060] A method for preparing nanometer gamma-AlOOH with sodium metaaluminate solution, comprising the steps:
[0061] Step 1, control the temperature of the sodium metaaluminate solution to 25°C, then add 0.36 mol of hydrogen peroxide solution to 0.26 mol of sodium metaaluminate solution, and after fully reacting for 5 minutes, collect the solid product in the reaction solution; wherein, The concentration of the sodium metaaluminate solution is 70g / L, the mass concentration of the hydrogen peroxide solution is 30%, and the ratio of the moles of aluminum in the sodium metaaluminate solution to the moles of hydrogen peroxide in the hydrogen peroxide solution is 1 : 27.5;
[0062] Step 2, washing the solid product until the pH of the product suspension is 7;
[0063] Step 3, drying the product suspension in a constant temperature drying oven at 105° C. for 12 hours to prepare nanometer γ-AlOOH.
[0064] The XRD spectrogram of the nano-γ-AlOOH prepared by the present embodiment...
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