A method for peeling shell aragonite flakes
A technology of shells and stone flakes, which is applied in the fields of chemical instruments and methods, inorganic chemistry, calcium carbonate/strontium/barium, etc., can solve the problems of destroying shells, difficult to obtain shell aragonite flakes with complete structure, complicated preparation process, etc., to achieve Gentle effect of the peeling process
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Embodiment 1
[0036] Wash the shells. Weigh 5 g of sodium hydroxide for 1 minute and add it to 100 g of deionized water, stir until completely dissolved, then weigh 10 g of urea for 2 minutes, add it to the solution, stir to dissolve, and cool to room temperature. Weigh 10g of shells and put them into sodium hydroxide-urea solution and stir, the solution will slowly become cloudy until it turns white. After three days of magnetic stirring at 600 rpm, the solution was left to stand for 5 hours to separate layers, the upper layer was a transparent solution, and the lower layer was a white precipitate. The upper layer solution was poured out, and the lower layer precipitate was washed with deionization for 4 times to remove residual sodium hydroxide-urea. Dry the white precipitate in an oven at 60°C for 12 hours to obtain a white powder. The process is as follows figure 1 As shown, the preparation method is mild, easy to operate, does not destroy the original structure of shell aragonite fla...
Embodiment 2
[0038]Wash the shells. Weigh 10 g of sodium hydroxide for 1 minute and add it to 100 g of deionized water, stir until completely dissolved, then weigh 5 g of urea for 2 minutes, add it into the solution, stir to dissolve, and cool to room temperature. Weigh 10g of shells and put them into sodium hydroxide-urea solution and stir, the solution will slowly become cloudy until it turns white. After three days of magnetic stirring at 600 rpm, the solution was left to stand for 5 hours to separate layers, the upper layer was a transparent solution, and the lower layer was a white precipitate. The upper layer solution was poured out, and the lower layer precipitate was washed with deionization for 4 times to remove residual sodium hydroxide-urea. Dry the white precipitate in an oven at 60°C for 12 hours to obtain a white powder. The process is as follows figure 1 As shown, the preparation method is mild, easy to operate, does not destroy the original structure of shell aragonite fl...
Embodiment 3
[0040] Wash the shells. Weigh 20 g of sodium hydroxide for 1 minute and add it to 100 g of deionized water, stir until completely dissolved, then weigh 10 g of urea for 2 minutes, add it to the solution, stir to dissolve, and cool to room temperature. Weigh 10g of shells and put them into sodium hydroxide-urea solution and stir, the solution will slowly become cloudy until it turns white. After three days of magnetic stirring at 600 rpm, the solution was left to stand for 5 hours to separate layers, the upper layer was a transparent solution, and the lower layer was a white precipitate. The upper layer solution was poured out, and the lower layer precipitate was washed with deionization for 4 times to remove residual sodium hydroxide-urea. Dry the white precipitate in an oven at 60°C for 12 hours to obtain a white powder. The process is as follows figure 1 As shown, the preparation method is mild, easy to operate, does not destroy the original structure of shell aragonite fl...
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