Preparation method of mesoporous silicone balls having regular morphology
A technology of mesoporous silicon spheres and mesoporous silica, applied in the directions of silicon oxide, silicon dioxide, etc., can solve the problems of difficult to have good morphology and high synthesis price of synthetic products, and achieve the effect of facilitating industrial application and reducing fluid resistance.
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Embodiment 1
[0027] (1) Wash and dry 50g (1-3mm) silica balls, then place them in a muffle furnace and raise the temperature to 550°C at a rate of 5°C / min and keep for 30min, then cool down and take them out for use.
[0028] (2) Dissolve 7.5g of cetyltrimethylammonium bromide (CTAB) in 151ml of deionized water, add 0.3g of NaOH, 38ml of absolute ethanol, and stir for 30min until the solution is clear to obtain a reaction solution.
[0029] (3) Add 4.5 g of pretreated silicon spheres to the reaction solution in (2), stir for 30 min, transfer the mixture to a hydrothermal reaction kettle for crystallization at 110°C for 48 h;
[0030] (4) Filter the solution in (3) to obtain a composite sphere, add 189ml of deionized water and place it in a hydrothermal reaction kettle to react at 110°C for 48h for hydrothermal post-treatment.
[0031] (5) The composite spheres obtained after hydrothermal post-treatment are washed and dried at 50°C for 12 hours; then the dried composite spheres containing t...
Embodiment 2
[0034] (1) Wash and dry 50g (0.5-1.5mm) of silica balls, then place them in a muffle furnace and raise the temperature to 350°C at a rate of 6°C / min and keep for 50min, then cool down and take them out for use.
[0035] (2) Dissolve 7.0g of dodecyltrimethylammonium bromide in 189ml of deionized water, add 0.3g of NaOH, and stir for 45min until the solution is clear to obtain a reaction solution.
[0036] (3) Add 4.5 g of pretreated silicon spheres to the reaction solution in (2), stir for 45 min, and transfer the mixture to a hydrothermal reactor for crystallization at 80°C for 40 h.
[0037] (4) Filter the solution in (3) to obtain a composite sphere, add 189ml of deionized water and place it in a hydrothermal reaction kettle to react at 80°C for 40h for hydrothermal post-treatment.
[0038] (5) The composite spheres obtained after hydrothermal post-treatment are washed and dried at 45°C for 12 hours; then the dried composite spheres containing the template agent are roasted,...
Embodiment 3
[0041] (1) Wash and dry 50g (3-5mm) of silica balls, then place them in a muffle furnace and raise the temperature to 450°C at a rate of 7°C / min and keep for 40min, then cool down and take them out for use.
[0042] (2) 15g tetradecyltrimethylammonium bromide (C 14TAB) was dissolved in 303ml of deionized water, added with 0.6g of NaOH and 75ml of absolute ethanol, and stirred for 30min until the solution became clear to obtain a reaction solution.
[0043] (3) Add 9 g of pretreated silicon spheres to the reaction solution in (2), stir for 30 min, and transfer the mixture to a hydrothermal reaction kettle for crystallization at 100°C for 35 h.
[0044] (4) Filter the solution in (3), save the filtrate for reuse, and obtain a composite sphere, add 189ml of deionized water and place it in a hydrothermal reactor for 35 hours at 100°C for hydrothermal post-treatment.
[0045] (5) The composite spheres obtained after hydrothermal post-treatment are washed and dried at 45°C for 12 h...
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