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A kind of preparation method of magnesium hydrogen phosphate hydroxyapatite core-shell material

A technology of magnesium hydrogen phosphate hydroxyapatite and hydroxyapatite, which is applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., to achieve the effects of low cost, simple and easy reaction process, and controllable particle size

Inactive Publication Date: 2019-05-17
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant report on magnesium hydrogen phosphate hydroxyapatite core-shell materials

Method used

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  • A kind of preparation method of magnesium hydrogen phosphate hydroxyapatite core-shell material
  • A kind of preparation method of magnesium hydrogen phosphate hydroxyapatite core-shell material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] First prepare a saturated calcium hydroxide solution in a 200mL beaker, then weigh 0.5g of magnesium dihydrogen phosphate and add 100mL of water to a 500mL beaker to dissolve to obtain a magnesium dihydrogen phosphate solution, and slowly add the saturated calcium hydroxide solution to the magnesium dihydrogen phosphate solution During the process, stir while adding until the pH of the mixed solution is 7, then filter, wash with water, and dry at 90°C to obtain magnesium hydrogen phosphate hydroxyapatite core-shell material.

Embodiment 2

[0013] First prepare a saturated calcium hydroxide solution in a 200mL beaker, then weigh 0.6g of magnesium dihydrogen phosphate and add 100mL of water into a 500mL beaker to dissolve to obtain a magnesium dihydrogen phosphate solution, and slowly add the saturated calcium hydroxide solution to the magnesium dihydrogen phosphate solution During the process, stir while adding until the pH of the mixed solution is 8, then filter and wash with water, and dry at 120°C to obtain magnesium hydrogen phosphate hydroxyapatite core-shell material.

Embodiment 3

[0015] First prepare a saturated calcium hydroxide solution in a 200mL beaker, then weigh 0.7g of magnesium dihydrogen phosphate and add 100mL of water to a 500mL beaker to dissolve it to obtain a magnesium dihydrogen phosphate solution, then slowly add the saturated calcium hydroxide solution to the magnesium dihydrogen phosphate solution During the process, stir while adding until the pH of the mixed solution is 6, then filter, wash with water, and dry at 180°C to obtain magnesium hydrogen phosphate hydroxyapatite core-shell material.

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Abstract

The invention discloses a preparation method of a magnesium hydrogen phosphate hydroxyapatite core-shell material. The preparation method comprises the following steps: adjusting the pH value of a magnesium dihydrogen phosphate solution to 6-8 by use of a saturated calcium hydroxide solution; after complete reaction, filtering and washing; drying at 90-180 DEG C to obtain a magnesium hydrogen phosphate hydroxyapatite core-shell material. According to the preparation method disclosed by the invention, the prepared magnesium hydrogen phosphate hydroxyapatite core-shell material has the advantages of uniform and controllable particle size, simple and easy reaction process and low energy consumption and cost, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of synthesis of core-shell materials, and in particular relates to a preparation method of magnesium hydrogen phosphate hydroxyapatite core-shell materials. Background technique [0002] Magnesium hydrogen phosphate is used in medicine as a modifier and in the manufacture of drugs for the treatment of rheumatoid arthritis. Used in the food industry as nutritional supplements, pH regulators, antagonists and stabilizers. In addition, it is also used as a plasticizer for packaging materials, ammonium bicarbonate stabilizer for fertilizers, toothpaste additives, feed additives and fertilizers. It is used as a chemical precipitant in urban and industrial sewage treatment, because magnesium hydrogen phosphate can react with ammonium ions to form magnesium ammonium phosphate, so it is used to remove high-concentration eutrophication pollution of water bodies-ammonia nitrogen. Using magnesium hydrogen phosphate al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/34C01B25/32
CPCC01B25/325C01B25/34C01P2002/72C01P2004/04
Inventor 王魁杨林王晓兵刘自力李伟
Owner HENAN NORMAL UNIV