CN107021467B - A kind of preparation method of magnesium monohydrogen phosphate hydroxyapatite core-shell material - Google Patents
A kind of preparation method of magnesium monohydrogen phosphate hydroxyapatite core-shell material Download PDFInfo
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- CN107021467B CN107021467B CN201710197657.5A CN201710197657A CN107021467B CN 107021467 B CN107021467 B CN 107021467B CN 201710197657 A CN201710197657 A CN 201710197657A CN 107021467 B CN107021467 B CN 107021467B
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- Prior art keywords
- magnesium
- monohydrogen phosphate
- shell material
- magnesium monohydrogen
- core
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
- C01B25/34—Magnesium phosphates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/32—Phosphates of magnesium, calcium, strontium, or barium
- C01B25/325—Preparation by double decomposition
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/04—Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
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Abstract
The invention discloses a kind of preparation methods of magnesium monohydrogen phosphate hydroxyapatite core-shell material, at normal temperatures and pressures, the pH that biphosphate magnesium solution is adjusted with saturated calcium hydroxide solution is 6-8, and washing is filtered after fully reacting, magnesium monohydrogen phosphate hydroxyapatite core-shell material is dried to obtain then at 90-180 DEG C.Magnesium monohydrogen phosphate hydroxyapatite core-shell material homogeneous grain diameter prepared by the present invention, size tunable, reaction process is simple and easy, energy consumption is lower and low in cost, is suitble to scale industrial production.
Description
Technical field
The invention belongs to the synthesis technical fields of core-shell material, and in particular to a kind of magnesium monohydrogen phosphate hydroxyapatite nucleocapsid material
The preparation method of material.
Background technique
Magnesium monohydrogen phosphate is used as the drug of alterant and manufacture treatment rheumatic arthritis in medicine.It is used in food service industry
Nutritional supplement, pH adjusting agent, antagonist and stabilizer.In addition it is also used to packaging material plasticizer, chemical fertilizer ammonium hydrogen carbonate is stablized
Agent, toothpaste additive, are also used as feed addictive and fertilizer.It is used as chemical precipitation in city and Industrial Waste Water Treatments
Agent, because magnesium monohydrogen phosphate can react to form ammonium magnesium phosphate with ammonium ion, for removing the higher water eutrophication of concentration
Pollution-ammonia nitrogen.Magnesium monohydrogen phosphate is used alone, and there are many disadvantages, such as in medicine, field of food due to magnesium ion and calcium ion radius
Close, Central nervous has inhibiting effect after magnesium ion enters human body, and one layer of hydroxyapatite is coated outside magnesium monohydrogen phosphate
Shell is it is possible to prevente effectively from magnesium ion enters human body, and hydroxyapatite is the main component of skeleton, harmless.In dirt
Magnesium monohydrogen phosphate is reacted with ammonium ion when water process generates magnesium monohydrogen phosphate, and magnesium monohydrogen phosphate has certain dissolubility in water, so
It is only used for high concentration ammonia nitrogen sewage to the processing of ammonia nitrogen, and discharge standard is not achieved in processing, and outside magnesium monohydrogen phosphate
The dissolution of ammonium magnesium phosphate can be prevented by coating one layer of hydroxyapatite shell, so magnesium monohydrogen phosphate hydroxyapatite core-shell material is in ammonia
There is good performance when nitrogen sewage treatment.At present still not about the correlation report of magnesium monohydrogen phosphate hydroxyapatite core-shell material
Road.
Summary of the invention
The technical problem to be solved by the present invention is to provide one kind do not need special installation and special reaction condition, energy consumption compared with
It is low, yield is higher, simple process and be suitble to scale industrial production magnesium monohydrogen phosphate hydroxyapatite core-shell material preparation side
Method.
The present invention adopts the following technical scheme that solve above-mentioned technical problem, a kind of magnesium monohydrogen phosphate hydroxyapatite nucleocapsid material
The preparation method of material, it is characterised in that specific steps are as follows: at normal temperatures and pressures, adjust biphosphate with saturated calcium hydroxide solution
The pH of magnesium solution is 6-8, and washing is filtered after fully reacting, magnesium monohydrogen phosphate hydroxyapatite nucleocapsid is dried to obtain then at 90-180 DEG C
Material.
Further preferably, the ratio of magnesium dihydrogen phosphate and water is 0.5-0.7g:0.1L in the biphosphate magnesium solution.
Compared with the prior art, the invention has the following beneficial effects: magnesium monohydrogen phosphate hydroxy-apatite lithophysa prepared by the present invention
Shell material homogeneous grain diameter, size tunable, reaction process is simple and easy, energy consumption is lower and low in cost, is suitble to large-scale industrial raw
It produces.
Detailed description of the invention
Fig. 1 is the transmission electron microscope picture of magnesium monohydrogen phosphate hydroxyapatite core-shell material made from the embodiment of the present invention 1；
Fig. 2 is the X-ray diffractogram of magnesium monohydrogen phosphate hydroxyapatite core-shell material made from the embodiment of the present invention 1.
Specific embodiment
Above content of the invention is described in further details by the following examples, but this should not be interpreted as to this
The range for inventing above-mentioned theme is only limitted to embodiment below, and all technologies realized based on above content of the present invention belong to this hair
Bright range.
Embodiment 1
Saturated calcium hydroxide solution is prepared first in 200mL beaker, then weighs 0.5g magnesium dihydrogen phosphate in 500mL beaker
Middle addition 100mL water dissolves to obtain magnesium dihydrogen phosphate solution, and it is molten that saturated calcium hydroxide solution is slowly added into magnesium dihydrogen phosphate
In liquid, stirring while adding until the pH=7 of mixed liquor stops, then filtering washing, magnesium monohydrogen phosphate hydroxyl phosphorus is dried to obtain in 90 DEG C
Lime stone core-shell material.
Embodiment 2
Saturated calcium hydroxide solution is prepared first in 200mL beaker, then weighs 0.6g magnesium dihydrogen phosphate in 500mL beaker
Middle addition 100mL water dissolves to obtain magnesium dihydrogen phosphate solution, and it is molten that saturated calcium hydroxide solution is slowly added into magnesium dihydrogen phosphate
In liquid, stirring while adding until the pH=8 of mixed liquor stops, then filtering washing, is dried to obtain magnesium monohydrogen phosphate hydroxyl in 120 DEG C
Apatite core-shell material.
Embodiment 3
Saturated calcium hydroxide solution is prepared first in 200mL beaker, then weighs 0.7g magnesium dihydrogen phosphate in 500mL beaker
Middle addition 100mL water dissolves to obtain magnesium dihydrogen phosphate solution, and it is molten that saturated calcium hydroxide solution is slowly added into magnesium dihydrogen phosphate
In liquid, stirring while adding until the pH=6 of mixed liquor stops, then filtering washing, is dried to obtain magnesium monohydrogen phosphate hydroxyl in 180 DEG C
Apatite core-shell material.
Embodiment above describes basic principles and main features of the invention and advantage, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, under the range for not departing from the principle of the invention, various changes and improvements may be made to the invention, these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (2)
1. a kind of preparation method of magnesium monohydrogen phosphate hydroxyapatite core-shell material coats one layer of hydroxy-apatite outside magnesium monohydrogen phosphate
Stone hull shape promotes magnesium monohydrogen phosphate to answer in medicine, food, sewage treatment field at magnesium monohydrogen phosphate hydroxyapatite core-shell material
With, it is characterised in that specific steps are as follows: at normal temperatures and pressures, the pH of biphosphate magnesium solution is adjusted with saturated calcium hydroxide solution
For 6-8, washing is filtered after fully reacting, magnesium monohydrogen phosphate hydroxyapatite core-shell material is dried to obtain then at 90-180 DEG C.
2. the preparation method of magnesium monohydrogen phosphate hydroxyapatite core-shell material according to claim 1, it is characterised in that: described
Biphosphate magnesium solution in the ratio of magnesium dihydrogen phosphate and water be 0.5-0.7g:0.1L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197657.5A CN107021467B (en) | 2017-03-29 | 2017-03-29 | A kind of preparation method of magnesium monohydrogen phosphate hydroxyapatite core-shell material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197657.5A CN107021467B (en) | 2017-03-29 | 2017-03-29 | A kind of preparation method of magnesium monohydrogen phosphate hydroxyapatite core-shell material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107021467A CN107021467A (en) | 2017-08-08 |
| CN107021467B true CN107021467B (en) | 2019-05-17 |
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| CN201710197657.5A Expired - Fee Related CN107021467B (en) | 2017-03-29 | 2017-03-29 | A kind of preparation method of magnesium monohydrogen phosphate hydroxyapatite core-shell material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115215310B (en) * | 2022-06-28 | 2023-10-27 | 新希望化工投资有限公司 | Impurity removal and recovery method for crude phosphoric acid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100336719C (en) * | 2006-03-28 | 2007-09-12 | 成都迪康中科生物医学材料有限公司 | Hydrothermal process of preparing nanometer hydroxyapatite colloid |
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- 2017-03-29 CN CN201710197657.5A patent/CN107021467B/en not_active Expired - Fee Related
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Granted publication date: 20190517 Termination date: 20200329 |