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Preparation method of nano aluminum powder with uniform particle size distribution

A technology of nano-aluminum powder and aluminum salt, which is applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, and can solve the problem of easy-to-coat by-product LiCl impurities, expensive preparation methods, and easy-to-oxidize products and other problems, to achieve the effect of narrow particle size distribution, less loss and less by-products

Active Publication Date: 2019-06-04
FUYANG NORMAL UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

After decades of development, although there are still many reasons restricting the application of nano-aluminum, for example: the preparation method is expensive, the output is small, etc., the value of nano-aluminum in application is still great
The disadvantages of the general solution chemical method for preparing nano-aluminum are that the product is easily oxidized, agglomerated, and easily coated with by-product LiCl impurities during the preparation process.

Method used

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  • Preparation method of nano aluminum powder with uniform particle size distribution
  • Preparation method of nano aluminum powder with uniform particle size distribution
  • Preparation method of nano aluminum powder with uniform particle size distribution

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preparation example Construction

[0039] According to the preparation method of a kind of nano-aluminum powder provided by the present invention, described method comprises the following steps:

[0040] Step 1, weighing aluminum salt and solvent I in a reaction flask;

[0041] The aluminum salt is an aluminum salt soluble in water or an organic solvent, preferably a single aluminum salt or a compound salt of aluminum and an alkali metal, more preferably aluminum trichloride or lithium aluminum hydride;

[0042] The solvent I is a polar organic solvent, preferably an ether solvent, such as diethyl ether, methyl ethyl ether, tetrahydrofuran, epoxyhexane, alkoxybenzene, more preferably anisole.

[0043] In step 1, an auxiliary organophosphorus compound is also added, such as alkylphosphine, arylphosphine, alkylarylphosphine, preferably arylphosphine, more preferably triphenylphosphine.

[0044] The mol ratio of described aluminum salt and auxiliary agent is lithium aluminum hydride: aluminum trichloride: auxilia...

Embodiment 1

[0075] (1) Take a dry four-necked flask, after vacuuming, in a vacuum glove box, press anhydrous AlCl 3 The ratio of the molar ratio to triphenylphosphine (TPP) is 1:10, and 0.23g LiAlH is weighed with an electronic balance 4 and 5.25g triphenylphosphine (TPP), then measure 40mL anisole with a graduated cylinder, pour it into the bottle, add a stirring bar at the same time, and block the bottle mouth with four glass stoppers. Take another 0.27g of anhydrous AlCl 3 Add it into the dropper, and at the same time measure 10mL of anisole with a graduated cylinder, and pour it into the dropper. Put the four-neck flask and dropper into the ultrasonic machine for about 15 minutes to ensure that the AlCl 3 , AlLiH 4 and triphenylphosphine (TPP) are completely dissolved in anisole; then the four-neck flask is placed on an intelligent magnetic stirrer for heating and stirring; , a thermometer and a dropper, after the temperature rises to 146°C, turn the plunger of the dropper to drip...

Embodiment 2

[0078] The preparation steps are the same as in Example 1, except that the preparation reaction temperature is 148° C., and the obtained product nano-aluminum powder is marked as No. 2.

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Abstract

The invention provides a preparation method of nano aluminum powder with uniform particle size distribution. Raw material aluminum salts are uniformly mixed in a solvent, and the nano aluminum powderis prepared under the condition of an auxiliary agent. By controlling the reaction conditions, the nano aluminum powder with different particle sizes can be obtained, and the obtained nano aluminum powder is subjected to characterization by using an X-ray diffractometer (XRD), an infrared spectrum, a scanning electron microscope, a thermogravimetric analysis and other methods. The preparation method has the advantages of being simple to operate, simple in required raw materials, low in cost, high in yield, high in separation efficiency and good in separation effect.

Description

technical field [0001] The invention relates to a separation technology of nanometer powder, in particular to a preparation method of nanometer aluminum powder. Background technique [0002] Since the 21st century, with the development of society and the progress of science and technology, human beings have increasingly higher requirements for materials, and human beings have higher and higher requirements for the sustainable development of society. Saving resources, saving energy, and improving the environment have become more and more human necessary conditions for consideration. Aluminum has become one of the pillar industries in most countries in the world. At the same time, as a recyclable material, aluminum and aluminum alloy processing materials have achieved rapid development in industry and technology. According to reports, the second largest metal material industry after the iron and steel industry is the aluminum and aluminum alloy processing industry. Aluminum n...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y40/00B82Y30/00
Inventor 陶栋梁金凤苗宁庞家乐张宏崔玉民陈继堂姜广鹏王永忠廖荣宝张琳
Owner FUYANG NORMAL UNIVERSITY
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