Method for preparing high-content nanometer magnesium peroxide by one-pot precipitation and product of high-content nanometer magnesium peroxide
A technology of magnesium peroxide and precipitation method, applied in the direction of chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of high production cost, many process steps, low product content, etc., achieve reduced dosage, simple preparation process, The effect of high content
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Embodiment 1
[0040] Accurately weigh 1.28g of magnesium nitrate hexahydrate and dissolve it in 20.5mL of deionized water, then quickly add 1.5mL of ammonia water; after stirring for 20 minutes, quickly add 8mL of hydrogen peroxide, wherein the molar concentration of magnesium ions is 0.17mol / L, and the mass concentration of hydrogen peroxide 8%, and then continue to react at room temperature for 1 h, and the whole reaction process is carried out under 180 r / min magnetic stirring; finally, the mixed solution is centrifuged at 5000 r / min, washed and dried in a 50 ° C oven for 12 h to obtain Nano Magnesium Peroxide. After titrating with potassium permanganate standard solution, the calculated product content is 83.0wt%.
[0041] figure 2 It is the XRD collection of collections of nano magnesium peroxide prepared according to preferred embodiment 1 of the present invention; figure 2 As shown, compared with its standard card, it shows that the product is magnesium peroxide.
Embodiment 2
[0043] Accurately weigh 1.28g of magnesium nitrate hexahydrate and dissolve it in 18.5mL of deionized water, then quickly add 1.5mL of ammonia water; after stirring for 20 minutes, quickly add 10mL of hydrogen peroxide, wherein the molar concentration of magnesium ions is 0.17mol / L, and the mass concentration of hydrogen peroxide 10%, and then continue to react at room temperature for 1 h, and the whole reaction process is carried out under magnetic stirring at 180 r / min; finally, the mixed solution is centrifuged at a speed of 5000 r / min, washed and placed in an oven at 50 ° C for 12 h. Obtain nano magnesium peroxide. After titrating with potassium permanganate standard solution, the calculated product content is 85.4wt%.
[0044] Figure 7 Be according to the SEM collection of illustrative plates of the prepared nano-magnesium peroxide of preferred embodiment 2 of the present invention, as Figure 7 As shown, it can be found that the average particle size of the product is a...
Embodiment 3
[0046] Accurately weigh 15.38g of magnesium nitrate hexahydrate and dissolve it in 15mL of deionized water, then quickly add 15mL of ammonia water; after stirring for 30 minutes, quickly add 30mL of hydrogen peroxide, wherein the molar concentration of magnesium ions is 1mol / L, and the mass concentration of hydrogen peroxide is 15% , and then continue to react at room temperature for 4 hours, and the whole reaction process is carried out under 100r / min magnetic stirring; finally, the mixed solution is separated by suction filtration, washed and put into a 70°C oven for 12 hours to obtain nano-magnesium peroxide. After titrating with potassium permanganate standard solution, the calculated product content is 88.9wt%.
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