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Aluminum hydroxide and preparation method thereof

A technology of aluminum hydroxide and preparation steps, applied in the field of material chemical industry, can solve the problems of difficulty in preparing aluminum hydroxide, and the morphology of aluminum hydroxide particles is not single, and achieve the effect of uniform morphology

Active Publication Date: 2021-08-10
上海交通大学包头材料研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the Bayer method is used to prepare aluminum hydroxide, and the morphology of the aluminum hydroxide particles produced by the reaction is not single, and it is difficult to prepare aluminum hydroxide of a single crystal form.

Method used

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  • Aluminum hydroxide and preparation method thereof
  • Aluminum hydroxide and preparation method thereof
  • Aluminum hydroxide and preparation method thereof

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preparation example Construction

[0030] At present, there are many preparation methods for hydroxide, and the industrial is mainly based on Bayer, sintering, and hydrothermal. Among them, the amount of aluminum hydroxide prepared by Bayer is high, large particle size, and aluminum hydroxide particles are not single. For the process of adding a metal catalyst in some aluminum water reactions, the addition of a metal catalyst is inevitably brought into some metal impurities, thereby affecting the purity of the product, and has an effect on its morphology control.

[0031] The present application example provides aluminum hydroxide and preparation thereof, which can be prepared, and aluminum hydroxide of three hydrolyzine stone is prepared.

Embodiment 1

[0063] This embodiment provides a method of preparation of aluminum hydroxide, and its preparation steps include:

[0064] Methanol sodium was added to water to mix the first solution, and the purity of 99.99% was added to the first solution in the first solution to stir the second solution at a stirring rate of 800 r / min, and heated to 80 ° C for 4 hours to obtain a product Solution. Among them, the molar ratio of sodium methoxide with the aluminum foil is 1: 1, the liquid solid ratio of the first solution and the aluminum foil is 5: 1.

[0065] The product solution was filtered off, and the aluminum hydroxide was filtered over, and the filtered aluminum hydroxide was dried 10 times, then dried under temperature conditions at 80 ° C to give aluminum hydroxide.

Embodiment 2

[0067] This embodiment provides a method of preparation of aluminum hydroxide, and its preparation steps include:

[0068] Methanol sodium was added to water to mix the first solution, and the purity of 99.99% was added to the first solution in the first solution to stir the second solution at a stirring rate of 800 r / min, and heated to 80 ° C for 4 hours to obtain a product Solution. Among them, the molar ratio of sodium methoxide and the aluminum foil is 20: 1, the liquid solid ratio of the first solution and the aluminum foil is 40: 1.

[0069] The product solution was filtered off, and the aluminum hydroxide was filtered over, and the filtered aluminum hydroxide was dried 10 times, then dried under temperature conditions at 80 ° C to give aluminum hydroxide.

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Abstract

The invention provides an aluminum hydroxide and a preparation method thereof, belong to the field of material chemical industry. The preparation method of the aluminum hydroxide comprises the following steps: mixing sodium alkoxide, water and an aluminum material to obtain a second solution, and carrying out aluminum-water reaction at the temperature of 40-100 DEG C to obtain the aluminum hydroxide. The preparation method can be used for preparing the aluminum hydroxide which is relatively uniform in morphology and has a crystal form of gibbsite.

Description

Technical field [0001] The present application relates to the field of material and chemical chemicals, and in particular, there is a hydroxide and a preparation method thereof. Background technique [0002] At present, there are many preparation methods for hydroxide, and the industrial is mainly based on Bayer, sintering, and hydrothermal. Aluminum hydroxide can be used as adsorbents, catalysts, and the like to ceramics, medicine. In addition, aluminum hydroxide is also a precursor for preparing aluminum oxide. Aluminum hydroxide different properties will also determine the use of aluminum hydroxide, and therefore the difference in preparation methods will also determine the application of the product. Among them, aluminum hydroxide is prepared in Bayer, and the morphology of the aluminum hydroxide obtained by the reaction is not single, and it is difficult to prepare a single aluminum hydroxide. Inventive content [0003] The present application provides a hydroxide and a pre...

Claims

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Application Information

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IPC IPC(8): C01F7/42C01F7/02
CPCC01F7/42C01F7/02C01P2002/72C01P2006/16C01P2006/80
Inventor 张佼唐文奇黄威胡越朱希亮
Owner 上海交通大学包头材料研究院
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