Method for preparing stable porous amorphous calcium carbonate in alcohol solvent
An amorphous calcium carbonate, porous technology, applied in the field of materials, can solve problems such as unseen, and achieve the effects of low cost, low equipment requirements, and simple process conditions
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Embodiment 1
[0030] 1. Prepare 0.1mol / L calcium chloride ethylene glycol solution and 0.1mol / L potassium carbonate ethylene glycol solution;
[0031] 2. Mix the calcium chloride ethylene glycol solution and potassium carbonate ethylene glycol solution in step 1 at 20°C, stir for 2 minutes to fully react, and then age at 20°C for 1 hour;
[0032] 3. Centrifuge the suspension aged for 1 hour to obtain a precipitate. The precipitate is first treated with glycerin to remove the by-product potassium chloride, and then treated with ethanol to remove the glycerin on the surface, then centrifuged, and then vacuumed at room temperature After drying for 12 hours, a white powder was finally obtained, that is, porous amorphous CaCO3 ;
[0033] 4. Carry out XRD detection and SEM observation to the obtained product, the result is as follows figure 1 (a) and figure 2 , indicating that the obtained product is pure amorphous CaCO 3 , amorphous CaCO 3 Porous irregular particles.
Embodiment 2
[0035] 1. Prepare 0.4mol / L calcium chloride ethylene glycol solution and 0.4mol / L potassium carbonate ethylene glycol solution;
[0036] 2. Mix the calcium chloride ethylene glycol solution and potassium carbonate ethylene glycol solution in step 1 at 0°C, stir for 2 minutes to fully react, and then age at 0°C for 1 week;
[0037] 3. Centrifuge the suspension that has been aged for 1 week to obtain a precipitate. The precipitate is first treated with glycerin to remove the by-product potassium chloride, and then treated with ethanol to remove the glycerin on the surface, then centrifuged, and then vacuumed at room temperature After drying for 12 hours, a white powder was finally obtained, that is, porous amorphous CaCO 3 ;
[0038] 4. Carry out XRD detection to the obtained product, the result is as follows figure 1 (b), indicating that the obtained product is pure amorphous CaCO 3 .
Embodiment 3
[0040] 1. Prepare 0.4mol / L calcium chloride ethylene glycol solution and 0.4mol / L potassium carbonate ethylene glycol solution;
[0041] 2. Mix the calcium chloride ethylene glycol solution and potassium carbonate ethylene glycol solution in step 1 at 20°C, stir for 2 minutes to fully react, and then age at 20°C for 1 day;
[0042] 3. Centrifuge the suspension that has been aged for 1 day to obtain a precipitate. The precipitate is first treated with glycerin to remove the by-product potassium chloride, then treated with ethanol to remove the glycerin on the surface, and then centrifuged, and then heated at room temperature After vacuum drying for 12 hours, a white powder was finally obtained, that is, porous amorphous CaCO 3 ;
[0043] 4. Carry out XRD detection to the obtained product, the result is as follows figure 1 (c), showing that the obtained product is pure amorphous CaCO 3 .
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