Technique for preparing aluminium sol

A technology of aluminum sol and a new process, which is applied in the direction of aluminum chloride, aluminum halide, aluminum oxide/aluminum hydroxide, etc., can solve the problems of high production cost, high equipment and process conditions, improve wear strength, reduce production cost, Effect of Adhesive Performance Improvement

Inactive Publication Date: 2003-10-01
LINZIZHENGHUA ACCESSORY INGREDIENT ZIBO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the aluminum sol prepared by this invention has relatively uniform particle size and good stability, it does not mention whether the adhesive performance of the obtained aluminum sol is improved. In addition, the equipment and process conditions used are relatively high, and the production cost is still high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 The molar ratio of boehmite and hydrochloric acid to Al 2 o 3 : The ratio of HCl=1:8 is put into a reaction kettle with mechanical stirring, and the temperature range is controlled at 110-120° C. for 7 hours to prepare an aluminum chloride solution, and then add deionized water to prepare an aluminum weight content of 3%. According to the content of aluminum in the required aluminum sol, metal aluminum is added to the reaction kettle in 6 times, and the reaction is carried out at 1 atmospheric pressure and 100-105 °C for 20 hours. During the reaction, the pump is used to circulate the material. After the reaction is completed, Add 3‰ of aluminum sol weight ammonium dihydrogen phosphate and 0.1% magnesium chloride, and filter to obtain a stable aluminum sol product.

Embodiment 2

[0018] Example 2 Aluminum hydroxide and hydrochloric acid are put into a reaction kettle with a mechanical stirring device in a weight ratio of Al: Cl=1:1, and the concentration ratio of the materials is adjusted according to the content of aluminum in the desired aluminum sol. React at 5 atmospheres and 150°C for 20 hours. After the reaction, measure the aluminum content and chlorine content. After filtering, add diammonium hydrogen phosphate with a weight of 0.1‰ of the aluminum sol to obtain a stable aluminum sol product.

Embodiment 3

[0019] Example 3 The molar ratio of aluminum oxide and hydrochloric acid is Al 2 o 3 : The ratio of HCl=1:3 is put into the reaction kettle, the reaction temperature is controlled to be 140~150° C., and kept for 2 hours to prepare aluminum chloride solution. During the reaction, dilute hydrochloric acid solution is continuously added, and then according to the required aluminum sol Add the supplemented metal aluminum into the reaction kettle in 4 times, maintain 1 atmospheric pressure, and control the temperature at 80-90°C for 40 hours. Stir continuously during the reaction. After the reaction, measure the aluminum content and chlorine content. , after adding triammonium phosphate with an aluminum sol weight of 0.1‰ and filtering to obtain a stable aluminum sol product.

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PUM

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Abstract

A process for preparing aluminium sol includes such steps as proportionally mixing alumina and/or aluminium hydroxide and/or another aluminium source with sulfuric acid, reaction at 80-150 deg.C for 2-18 hr while stirring, adding water, aqueous solution of hydrochloric acid, or the aqueous solution containing aluminium chloride, adding aluminium, and reaction at 80-150 deg.c and 1-5 atmos for 3-40 hr. Its advantages are low cost, and ihgh viscosity.

Description

technical field [0001] The invention belongs to the field of preparation of aluminum sol, and in particular relates to a new process for preparing aluminum sol with low cost and high adhesive performance by using various aluminum compounds as aluminum sources. Background technique [0002] As an inorganic polymer binder with high temperature resistance and good bonding performance, aluminum sol is widely used in the bonding of catalysts, such as the bonding of semi-synthetic hydrocarbon cracking catalysts. The current aluminum sol is mainly produced by using metallic aluminum as the aluminum source and dissolving it with hydrochloric acid. Because metal aluminum is prepared by electrolysis of aluminum hydroxide powder, a large amount of electric energy is consumed in production, and the price of metal aluminum is relatively expensive, resulting in high manufacturing cost of aluminum sol. Moreover, when metallic aluminum is used as the aluminum source, the prepared aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02C01F7/56
Inventor 侯永正翟少华石燕王吉顺冯志杰
Owner LINZIZHENGHUA ACCESSORY INGREDIENT ZIBO
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