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Method for preparing magnesium peroxide by non-emulsion process

A magnesium peroxide, non-emulsifying technology, applied in chemical instruments and methods, peroxide/peroxyhydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve the problem of high cost, peroxide Low magnesium content and other issues, to achieve the effect of convenient operation, reduce raw material cost, and facilitate large-scale industrial production

Inactive Publication Date: 2009-12-30
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method also has problems such as low magnesium peroxide content and high cost in the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Add 36 mL of hydrogen peroxide with a mass concentration of 30% in a 500 mL beaker; weigh 0.5 g of hydroxyethylidene diphosphonic acid and add it to the beaker, stir to dissolve it; then add 1.1 mol / L of hydrogen peroxide into the beaker Magnesium chloride solution 150mL, after mixing evenly, add 110mL ammonia solution with a mass concentration of 25% drop by drop under stirring condition; control the temperature of the reaction system at 15±5°C, and stir for 4 hours. Obtain wet product magnesium peroxide by suction filtration after the reaction, wet product magnesium peroxide is after washing, and temperature is 70 ℃, pressure is that vacuum drying under 80mmHg, obtains the powder product that 10g magnesium peroxide content is 47.6%.

Embodiment 2

[0019] Example 2: Add 54mL of hydrogen peroxide with a mass concentration of 20% in a 500mL beaker; weigh 0.5g sodium hydroxyethylidene diphosphonate and add it, stir to dissolve it; then add 1.1mol / L of hydrogen peroxide into the beaker Magnesium chloride solution 150mL, after mixing evenly, add 110mL ammonia solution with a mass concentration of 25% dropwise under stirring; control the temperature of the reaction system at 15±5°C, and stir for 4 hours. Obtain wet product magnesium peroxide by suction filtration after the reaction, wet product magnesium peroxide is after washing, and temperature is 70 ℃, pressure is that vacuum drying under 80mmHg, obtains the powder product that 10.5g magnesium peroxide content is 47.3%.

Embodiment 3

[0020] Example 3: Add 36mL of hydrogen peroxide with a mass concentration of 30% in a 500mL beaker, weigh 0.5g of aminotrimethylene phosphonic acid and add it, stir to dissolve it; then add magnesium sulfate with a concentration of 1.1mol / L to the beaker Solution 150mL, after mixing evenly, add 100mL of sodium hydroxide solution with a mass concentration of 28% drop by drop under stirring; control the temperature of the reaction system at 15±5°C, and stir for 4 hours. Obtain wet product magnesium peroxide by suction filtration after the reaction, wet product magnesium peroxide is after washing, and temperature is 70 ℃, pressure is that vacuum drying under 80mmHg, obtains the powder product that 10.5g magnesium peroxide content is 47.5%.

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PUM

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Abstract

The invention provides a method for preparing magnesium peroxide by a non-emulsion process. The method comprises the following steps: taking organic phosphonic acid and salts thereof or inorganic phosphonic acid and salts thereof as a stabilizer, taking soluble magnesium salts, hydrogen peroxide solution and base as raw materials, and reacting in an aqueous solution system for 2-10h with the system temperature controlled at 10-30 DEG C; filtering, washing and drying the reaction products to obtain white magnesium peroxide powder. The method is characterized by taking soluble magnesium salts as raw materials for preparing magnesium peroxide, which avoids high cost and low utilization ratio of hydrogen peroxide due to taking magnesia as raw materials; the magnesium peroxide content of the obtained product is more than 40%, the production process is simple, energy consumption is low, and the method is applicable to large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical industry and relates to a preparation method of magnesium peroxide, in particular to a method for preparing magnesium peroxide by adopting a non-emulsification method. Background technique [0002] Magnesium peroxide is an important inorganic peroxide, white powder, the molecular formula is MgO 2 , and its industrial products are composed of magnesium peroxide, magnesium oxide, magnesium hydroxide, etc. Magnesium peroxide can be used for soil improvement and groundwater treatment; it can also be used as tooth bleaching agent, hair coloring agent, etc.; Abnormal fermentation and other diseases. [0003] At present, there are two main production methods of magnesium peroxide: one is the light magnesium oxide method, that is, the direct reaction of light magnesium oxide with a hydrogen peroxide solution with a concentration of more than 50%, and the obtained wet product can be obtained b...

Claims

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Application Information

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IPC IPC(8): C01B15/043
Inventor 吴志坚葛飞李权刘海宁
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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