Method for preparing nano SiO2 through microemulsion online monitoring process
A microemulsion and nanotechnology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of long cycle, cumbersome experiments, and inability to diagnose in time, and achieve good dispersion and particle size. Controllable, narrow particle size distribution effect
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[0015] Example 1:
[0016] a. Prepare cyclohexane: OP-10: n-butanol (molar ratio) = 38:1:2.5 mixed solution, slowly add 104 mmol ammonia to the above mixed solution, set the speed to 3000 rpm and the temperature to 20 ℃, mix Get translucent microemulsion in 2 hours
[0017] b. Add 156 mmol TEOS to the microemulsion of step a, react for 2 hours, age for 10 hours, wash, separate, and dry for 4 hours to prepare SiO with a particle size of 150 nm 2 .
Example Embodiment
[0018] Example 2:
[0019] a. Prepare cyclohexane: OP-10: n-butanol (molar ratio) = 76:1:2.5 mixed solution, slowly add 260 mmol ammonia to the above mixed solution, set the speed to 4000 rpm and the temperature to 30°C, mix Get a translucent microemulsion in 2 hours
[0020] b. Add 390 mmol TEOS to the microemulsion of step a, react for 4 hours, age for 10 hours, wash, separate, and dry for 4 hours to prepare SiO with a particle size of 50 nm 2 .
Example Embodiment
[0021] Example 3:
[0022] a. Prepare cyclohexane: OP-10: n-butanol (molar ratio) = 114:1:2.5 mixed solution, slowly add 416 mmol ammonia to the above mixed solution, set the speed to 5000 rpm and the temperature to 40 ℃, mix Get translucent microemulsion in 2 hours
[0023] b. Add 642 mmol of TEOS to the microemulsion of step a, react for 5 hours, age for 10 hours, wash, separate, and dry for 6 hours to prepare SiO with a particle size of 400 nm 2 .
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