Magnesium aluminum silicon compound absorbing material, preparation method and application thereof
A composite adsorption material, magnesium-aluminum-silicon technology, applied in the field of material preparation and water treatment, can solve the problems of large space resistance, long process and high consumption
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Embodiment 1
[0022] A preparation method of a magnesium-aluminum-silicon composite adsorption material, the steps are as follows:
[0023] (1) Weigh and mix the magnesium salt, aluminum salt and silicon salt compound according to the molar ratio of magnesium: aluminum: silicon element 3:1:0.015, and add saturated alkali solution according to the mass volume ratio of 1:10 (g:ml) to control The temperature is 60°C, the pH is 10, and the reaction is stirred for 3 hours to obtain a milky white slurry; the magnesium salt is magnesium sulfate; the aluminum salt is sodium metaaluminate; the silicon salt is sodium silicate. Described saturated alkaline solution is saturated sodium hydroxide solution and saturated sodium carbonate solution at normal temperature, the volume ratio of the two is 1:2;
[0024] (2) Put the slurry in a hydrothermal reaction kettle, control the temperature at 120° C., and conduct a crystallization reaction for 24 hours. The product of the crystallization reaction is first...
Embodiment 2
[0027] A preparation method of a magnesium-aluminum-silicon composite adsorption material, the steps are as follows:
[0028] (1) Weigh and mix the magnesium salt, aluminum salt and silicon salt compound according to the molar ratio of magnesium: aluminum: silicon element 3:2:0.010, add saturated alkali solution according to the mass volume ratio 1:6 (g:ml), and control The temperature is 80°C, the pH is 9, and the reaction is stirred for 2 hours to obtain a milky white slurry; the magnesium salt is magnesium chloride; the aluminum salt is aluminum chloride; the silicon salt is sodium silicate. Described saturated alkaline solution is saturated sodium hydroxide solution and saturated sodium carbonate solution at normal temperature, the volume ratio of the two is 1:3;
[0029] (2) Put the slurry in a hydrothermal reaction kettle, control the temperature at 130° C., and carry out the crystallization reaction for 30 hours. The product of the crystallization reaction is washed sev...
Embodiment 3
[0032] (1) Weigh and mix the magnesium salt, aluminum salt and silicon salt compound according to the molar ratio of magnesium: aluminum: silicon element 3:1.5:0.013, add saturated alkali solution according to the mass volume ratio 1:8 (g:ml), and control The temperature is 70°C, the pH is 11, and the reaction is stirred for 2.5 hours to obtain a milky white slurry; the magnesium salt is magnesium sulfate; the aluminum salt is aluminum chloride; the silicon salt is sodium silicate. Described saturated alkaline solution is saturated sodium hydroxide solution and saturated sodium carbonate solution at normal temperature, and the volume ratio of the two is 1:1;
[0033] (2) Put the slurry in a hydrothermal reaction kettle, control the temperature at 125° C., and carry out the crystallization reaction for 25 hours. The product of the crystallization reaction is washed several times with distilled water, and then vacuum filtered to dryness;
[0034] (3) Put the product obtained in ...
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