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Aluminum-magnesium silicate compound and synthetic method thereof

A magnesium aluminum silicate and compound technology, applied in the direction of aluminum silicate, silicate, etc., can solve the problems of no reports, etc., and achieve the effects of easy operation, simple preparation method, and good product stability

Inactive Publication Date: 2009-12-30
HAINAN YONGTIAN PHARMA INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no relevant report on the preparation of magnesium aluminum silicate simply by the chemical reaction between the components.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) In the reaction bottle of 1000ml, put 6.15g MgSO 4 Dissolve in 25ml of deionized water, maintain the temperature at 30°C, and filter to obtain a clear and transparent solution. Will Al 2 (SO 4 ) 3 18H 2 16.32 g of O was dissolved in 100 ml of deionized water and added to the above solution while maintaining the temperature at 30° C. while vigorously stirring to obtain a mixture.

[0050] (2) Na 2 SiO 3 9H 2 O 59.22g was dissolved in 300ml of water and filtered to obtain a clear liquid. Add 6.25ml of 48% NaOH solution to this solution, and after stirring evenly, this solution is slowly added dropwise to the mixture obtained in step (1), during which the temperature is gradually raised to 60°C, during which white insoluble matter is generated.

[0051] (3) 1.95g crystalline CaCl 2 Dissolve in 10 ml deionized water and filter to obtain a clear solution. Then it was added dropwise into the mixed solution 1 obtained in step (2), and stirred vigorously for 2 h. ...

Embodiment 2

[0055] (1) In the reaction bottle of 1000ml, put 12.6g MgSO 4 ·7H 2 O was dissolved in 50ml of deionized water, maintained at 50°C, and filtered to obtain a clear and transparent solution. Will Al 2 (SO 4 ) 3 18H 2 O16.32g was dissolved in 100ml of deionized water, and added to the above solution. During the process, the temperature was maintained at 50°C while stirring vigorously. The organic solvent ethanol was added to precipitate a solid, which was filtered to obtain a white solid mixture.

[0056] (2) Na 2 SiO 3 9H 2 O 59.22g was dissolved in 1000ml of water and filtered to obtain a clear liquid. Add 7.5ml of 40% NaOH solution to this solution, and after stirring evenly, slowly add this solution dropwise to the white solid mixture in step (1), during which the temperature is gradually raised to 50°C.

[0057] (3) 3.85g CaCl 2 ·6H 2 O was added dropwise to the mixed solution 1 obtained in step (2), and stirred vigorously for 2 h, during which the temperature was...

Embodiment 3

[0061] (1) 9.23g MgSO 4 solid and 16.32g Al 2 (SO 4 ) 3 18H 2 O solid mixed.

[0062] (2) Na 2 SiO 3 9H 2 O 59.22g was dissolved in 800ml of water and filtered to obtain a clear liquid. Add 10ml of 30% NaOH solution to this solution, stir evenly, slowly add this solution dropwise to the mixture obtained in step (1), stir and react, during which the temperature is gradually raised to 65°C.

[0063] (3) 2.58g crystalline CaCl 2 2H 2 O was dissolved in 20 ml of deionized water and filtered to obtain a clear solution. Then it was added dropwise into the mixed solution 1 obtained in step (2), and stirred vigorously for 2 h, during which the temperature was kept at 65°C.

[0064] (4) Filter the mixed solution 2 obtained in step (3) to obtain a white filter cake. The filter cake was washed with 1000ml deionized water again, and the pH value of the mother liquor was measured. Repeat this three times until the pH value is 9. Finally, the white filter cake was vacuum-dried...

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Abstract

The invention provides an aluminum-magnesium silicate compound, a synthetic method thereof and aluminum-magnesium silicate obtained by the method. The aluminum-magnesium silicate comprises the following ingredients in percentage by weight: 14.28-18.79 aluminum, 6.86-16.71 magnesium and 6.73-16.64 silicon, and the ratio of the aluminum to the magnesium is 0.5-1.2 or 1.4-2.8. The method comprises the following steps: (1) respectively dissolving magnesium sulfate and aluminum sulfate in water and mixing and stirring the obtained solutions; (2) dissolving sodium silicate in water to form a sodium silicate solution, adding a sodium hydroxide solution, stirring uniformly and adding to the solution of the step (1) to react; and (3) adding solid calcium chloride or an aqueous solution of calcium chloride to the reaction mass of the step (2) to stir, react and form the aluminum-magnesium silicate. The method can be used for obtaining the aluminum-magnesium silicate by chemical synthesis to fill in the gap of a chemical mass synthesis method and is simple and easy to operate, and the obtained aluminum-magnesium silicate has high purity and good stability and reaches a medicinal level.

Description

technical field [0001] The invention relates to a magnesium aluminum silicate compound, in particular to a preparation method of magnesium aluminum silicate. It belongs to the field of pharmaceutical technology. Background technique [0002] Magnesium aluminum silicate is a soft, smooth, non-toxic and tasteless white powder, insoluble in water, can expand into a dispersion system many times larger than the original volume in water, and can maintain stability for a long time. Its chemical composition is often represented by oxides, mainly silicon dioxide, aluminum oxide, and magnesium oxide. It can be widely used in cosmetics, pharmaceuticals, food, feed, daily chemicals, and other industries. [0003] Magnesium aluminum silicate is currently an inorganic gel material extracted and purified from ore, bentonite, bentonite, etc., and is a good viscosity modifier, thickener, suspending agent, stabilizer, fluid contact agent, etc. Denaturation regulator, widely used in chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26
Inventor 邱民
Owner HAINAN YONGTIAN PHARMA INST
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