Synthesis method of magnesium hydroxide nano pipe

A technology of magnesium hydroxide and a synthesis method, which is applied in the field of synthesis of magnesium hydroxide nanotubes, can solve problems such as unfavorable large-scale industrial production, complicated reaction process, and reduced product purity, and achieve easy control of production conditions, low cost, The effect of high product purity

Inactive Publication Date: 2004-12-22
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the introduction of templates or surfactants into the reaction system is inseparable from their preparation and selection, which not only co

Method used

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  • Synthesis method of magnesium hydroxide nano pipe
  • Synthesis method of magnesium hydroxide nano pipe
  • Synthesis method of magnesium hydroxide nano pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Weigh 0.001mol of magnesium chloride and place it in a beaker, add 20ml of deionized water, stir to dissolve it, then quickly add 10ml of 5M ammonia solution, continue stirring for 10 minutes, and then centrifugally wash the obtained precipitate until the pH of the solution is 7 , redisperse the precipitate in a mixed solvent of 20ml of methanol and water, then add 0.3g of potassium chloride as a mineralizer and stir to dissolve it, and transfer the stirred and dissolved mixture into a closed stainless steel reactor, at 240°C The reaction was carried out under low temperature for 18 hours. After the reaction was complete, it was cooled to normal temperature, and then the obtained product was washed with deionized water and dried at 50°C to obtain the product. The product was identified as magnesium hydroxide by X-ray powder diffraction; the morphology of the product was detected by TEM and SEM electron microscopy.

Embodiment 2

[0016] Weigh 0.001mol of magnesium nitrate and place it in a beaker, add 20ml of deionized water, stir to dissolve it, then quickly add 10ml of 5M ammonia solution, continue stirring for 10 minutes, and then centrifugally wash the obtained precipitate until the pH of the solution is 7. Redisperse the precipitate in a mixed solvent of 20ml of methanol and water, then add 0.4g of sodium sulfate as a mineralizer and stir to dissolve it, and transfer the stirred and dissolved mixture into a closed stainless steel reactor, at 220°C The reaction was carried out under low temperature for 22 hours. After the reaction was complete, it was cooled to room temperature, and then the obtained product was washed with deionized water and dried at 60°C to obtain the product. The product was identified as magnesium hydroxide by X-ray powder diffraction; the morphology of the product was detected by TEM and SEM electron microscopy.

Embodiment 3

[0018] Weigh 0.001mol of magnesium chloride and place it in a beaker, add 20ml of deionized water, stir to dissolve it, then quickly add 10ml of 5M ammonia solution, continue stirring for 10 minutes, and then centrifugally wash the obtained precipitate until the pH of the solution is 7 , redisperse the precipitate in a mixed solvent of 20ml of methanol and water, then add a mixture of 0.2g of sodium chloride and 0.2g of potassium nitrate as a mineralizer and stir to dissolve it, and move the stirred and dissolved mixture into a stainless steel closed reaction React in a container at 240°C for 20 hours, cool to normal temperature after the reaction is complete, then wash the obtained product with deionized water, and dry at 60°C to obtain the product. The product was identified as magnesium hydroxide by X-ray powder diffraction; the morphology of the product was detected by TEM and SEM electron microscopy.

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Abstract

A process for synthesizing the magnesium hydroxide nanotubes includes adding aqueous solution of ammonia to the solution of magnesium nitrate (or chloride), stirring to generate deposit, centrifugal washing until its pH value is neutral, dispersing the deposit in the solution of methanol or ethanol and water, adding inorganic salt chosen from potassium chloride, sodium chloride, sodium sulfate, potassium sulfide, potassium nitrate, sodium nitrate and their mixture, stirring, reacting at 200-250 deg.C for 15-24 hr in a sealed reactor, cooling, washing and drying.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical industry, and relates to a production method of nanomaterials, in particular to a synthesis method of magnesium hydroxide nanotubes. Background technique [0002] Since the advent of carbon nanotubes, one-dimensional nanostructured materials have attracted much attention because of their unique electrical, optical, magnetic and mechanical properties and their potential applications in the construction of nanodevices. Dimensional nanomaterials have always been a hot research topic for technicians. As a common inorganic substance, magnesium hydroxide is widely used in food industry, smoke and sulfur removal, water treatment and other environmental protection aspects. Magnesium hydroxide with special crystal form is superior to organic flame retardants and ATH, and has environmental protection effects. Better new inorganic filled flame retardants in the 21st century [Wang Zheng-Zhou, et a...

Claims

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Application Information

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IPC IPC(8): C01F5/20
Inventor 唐波禚林海葛介超牛金叶
Owner SHANDONG NORMAL UNIV
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