Preparation method for nano magnesium peroxide

A technology of magnesium peroxide and magnesium oxide, which is applied in the direction of chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems such as product particle size not mentioned, and achieve good dispersion, uniform particle size, and low raw material cost Effect

Active Publication Date: 2013-12-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

All do not mention product particle size problem in the preparation method of above-mentioned magnesium pe...

Method used

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  • Preparation method for nano magnesium peroxide
  • Preparation method for nano magnesium peroxide
  • Preparation method for nano magnesium peroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Accurately weigh 0.5g of commercially available analytical pure magnesium oxide, add 15ml of deionized water to a 250ml beaker, dissolve and grind for about 1 hour to obtain a magnesium oxide slurry with a mass percentage of about 3.2%. Weigh 1g of commercially available analytically pure ammonium chloride and dissolve it in 15ml of commercially available hydrogen peroxide with an analytically pure mass fraction of about 30%. After mixing completely, slowly add it to the ground magnesium oxide slurry while stirring. The reaction was continued for 3.5 h under mechanical stirring to obtain a white mixture, which was vacuum-dried at -80°C after suction filtration. The target product nano magnesium peroxide powder is obtained.

[0020] Tested by X-ray diffractometer figure 1 The XRD spectrum of the nano-magnesium peroxide prepared in Example 1 of the present invention is compared with the standard card, showing that the prepared substance is magnesium peroxide with a purit...

Embodiment 2

[0023] Accurately weigh 1 g of commercially available analytical pure magnesium oxide, add 25 ml of deionized water to a 250 ml beaker, dissolve and grind for 1.5 hours to obtain a magnesium oxide slurry with a mass percentage of about 3.8%. Accurately weigh 2g of commercially available analytically pure ammonium chloride and dissolve in 35ml of commercially available hydrogen peroxide with an analytically pure mass fraction of about 30%, and continue to react for 4h under mechanical stirring at 500r / min to obtain a white mixed solution. Freeze and vacuum dry at -80°C. The target product nano magnesium peroxide powder is obtained.

[0024] Tested by X-ray diffractometer figure 2 The XRD spectrum of the nano-magnesium peroxide prepared in Example 2 of the present invention is compared with the standard card, showing that the prepared substance is magnesium peroxide with a purity of 52%. Contains small amounts of magnesium oxide and magnesium hydroxide.

[0025] Such as Fi...

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Abstract

The invention relates to a preparation method for nano magnesium peroxide. Using magnesium oxide, ammonium chloride, and oxydol with mass percentage of 30% according to the mass ratio of 1:(1.5-2.5):(30-40); dissolving the magnesium oxide into deionized water and grinding into magnesium oxide size mixture with the mass percentage of 3-4%; dissolving the ammonium chloride into the oxydol, and stirring and slowly adding into the ground magnesium oxide size mixture; keeping the reaction under the continuous stirring at 500 r/min for 3-4 h to obtain white precipitate mixed solution; filtering the white precipitate mixed solution to obtain a wet filter cake; performing freezing vacuum drying at -80 DEG C to obtain a target product of nano magnesium peroxide powder with particle size of 20 nm, good dispersity, and purity higher than 50%. The method is simple to operate and is suitable for large-scaled industrialized production.

Description

technical field [0001] The invention relates to a preparation method of nano-magnesium peroxide, which belongs to the technical field of chemical synthesis methods. Background technique [0002] Magnesium peroxide, molecular formula MgO 2 , is a solid inorganic peroxide. Appearance is white powder, odorless and tasteless, insoluble in water, soluble in dilute acid. It is relatively stable at room temperature. When heated or in contact with humid air, it will release oxygen slowly and steadily. When dissolved in acid, it will produce hydrogen peroxide. Magnesium peroxide is non-toxic and non-polluting to the environment, so it is widely used in many fields such as medicine, textile industry, mining industry, and agriculture. [0003] In the field of environmental protection, magnesium peroxide can be used as an oxygen-releasing compound for in-situ chemical oxidation, and as a raw material for soil, sediment, surface water and groundwater pollution remediation. The relati...

Claims

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Application Information

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IPC IPC(8): C01B15/043B82Y30/00
Inventor 李咏梅王婕
Owner TONGJI UNIV
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