Method for preparing whitlockite, and whitlockite prepared thereby
View Patent ↗The present invention relates to a method for producing whitlockite, and whitlockite produced thereby. A method for producing whitlockite according to one embodiment of the present invention comprises: a step of preparing a precursor solution by mixing a first solution containing a calcium (Ca) ion source material, a second solution containing a magnesium (Mg) ion source material, and a third solution containing a phosphate (PO 4 ) source material; a heat-treatment step of heat-treating the precursor solution; and a step of separating and purifying the precipitate formed in the solution, after the heat-treatment step.
1 . A method for producing whitlockite comprising:
(a) preparing a mixed solution by mixing a first solution containing calcium chloride with a second solution containing magnesium chloride;
(b) preparing a precursor solution by adding the mixed solution dropwise to a third solution containing sodium hydrogen phosphate in a reactor configured to have such a size that whitlockite is obtained in kilogram scale;
(c) heat-treating the precursor solution at 50° C. to 90° C. for 12 hours to 24 hours; and
(d) separating and purifying a precipitate formed in the precursor solution after the heat-treatment step.
2 . The method of claim 1 , wherein the mixed solution is added dropwise to the third solution for a predetermined period of time at predetermined intervals.
3 . The method of claim 1 , wherein a solvent for at least one of the first solution, the second solution, and the third solution comprises water and oleic acid.
4 . The method of claim 1 , wherein the first solution and the second solution are mixed such that a molar ratio between Ca 2+ and Mg 2+ is 7.34:1 to 1:2.