Long-range orderly layered nano-structure calcium carbonate polycrystalline powder and preparation method thereof
A layered nano, long-range ordering technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of not providing long-range ordering of the structure and the size of the interlayer distance of the nanocrystal thickness, so as to reduce the manufacturing cost and environmental load , The process is simple, the effect of saving resources
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Embodiment 1
[0025] (1) Dissolve 0.03mol calcium nitrate in a beaker filled with 30mL water, and dissolve 0.0075mol sodium dodecylsulfonate in a beaker filled with 18mL water, mix the two solutions and pour into 10mL ethanol , and then preheat the mixture to 60°C, add it into a flask with a reflux device, stir it evenly under the condition of 60°C, and keep it warm for later use;
[0026] (2) 0.03mol sodium carbonate is dissolved in 60mL water, then add 8mL ethanol, be mixed with the mixed solution of sodium carbonate-water-ethanol, above-mentioned mixed solution is preheated to 60 ℃, the sodium carbonate mixed solution is added to step (1) quickly ) in the flask, warming up to reflux temperature of 94°C, reacting for 1 hour, stopping stirring and heating;
[0027] (3) Let the reaction product obtained in the previous step stand at room temperature for 0 hours, and then separate it by suction filtration. The obtained precipitate is dried at 60°C until the quality remains unchanged, and 3.1...
Embodiment 2
[0030] Double the ethanol consumption of step (1) (2) (3) in embodiment 1, reflux temperature is 90 ℃, other steps are the same as embodiment 1. 3.2 g of the white powder was obtained, which was long-range ordered layered nanostructure calcium carbonate polycrystalline powder with a layer distance of 3.2 nm. After analysis, the organic component in the powder accounts for 8.5% of the mass percentage of the powder (the structure of the product is similar to that of Example 1).
Embodiment 3
[0032] The ethanol in steps (1)(2)(3) in Example 1 is replaced with ethylene glycol, and the reflux temperature is 104° C., and other steps are the same as in Example 1. The product obtained was 3.0 g of white powder, which was long-range ordered layered nanostructure calcium carbonate polycrystalline powder, and the interlayer spacing was 3.2 nanometers. After analysis, the organic component in the powder accounts for 8.6% of the mass percentage of the powder. (product structure is similar to Example 1).
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