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A kind of aluminum oxide and its preparation method and application

A technology of alumina and peroxide, applied in the fields of alumina/hydroxide preparation, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of low specific surface area, small pore diameter and pore volume of synthetic alumina, etc. To achieve the effect of favorable growth, concentrated pore size distribution and avoiding agglomeration

Active Publication Date: 2021-08-10
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​alumina synthesized by this method is low, and the pore diameter and pore volume are small.

Method used

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  • A kind of aluminum oxide and its preparation method and application
  • A kind of aluminum oxide and its preparation method and application
  • A kind of aluminum oxide and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] The present embodiment prepares alumina according to the following method:

[0105] (1) Add 100g of isopropanol, 10g of aluminum powder and 0.1g of aluminum chloride into the autoclave, turn on the stirrer and control the speed to 500r / min, the reaction temperature is 95°C, and the pressure is 1.5MPa for 1.5 hours, and then Filter through a 1000-mesh filter at 95°C to obtain an aluminum isopropoxide solution, including 110 g of aluminum isopropoxide;

[0106] (2) Add the above-mentioned aluminum isopropoxide solution into the autoclave, add 500g of isopropanol, heat up to a reaction temperature of 95°C, then add 40g of deionized water into the autoclave, and stir while adding it dropwise. After the addition of deionized water was completed, all the water was evaporated under vacuum, aged at 120°C for 12 hours, and finally filtered and dried to obtain 80g of pseudo-boehmite containing 75% isopropanol;

[0107] (3) Add the obtained pseudo-boehmite, 1g of benzoyl peroxide...

Embodiment 2

[0110] The present embodiment prepares alumina according to the following method:

[0111] (1) Add 250g of n-hexanol, 20g of aluminum powder and 1.0g of aluminum chloride into the autoclave, turn on the stirrer and control the speed to 1000r / min, the reaction temperature is 100°C, and the pressure is 2.0MPa. At ℃, use a 600-mesh filter to filter to obtain aluminum n-hexoxide solution, in which aluminum n-hexoxide is 285g;

[0112] (2) Add the above-mentioned aluminum n-hexanol solution into the autoclave, add 700g of n-hexanol, heat up to the reaction temperature of 100°C, then add 100g of deionized water into the reaction kettle, stir while adding it dropwise, and deionize the After the water is added dropwise, vacuumize to evaporate all the water, age at 150°C for 36 hours, and finally filter and dry to obtain 200g of pseudo-boehmite containing 80% n-hexanol;

[0113] (3) Add the obtained pseudo-boehmite, 2g of benzoyl peroxide, 600g of deionized water and 100g of xylitol i...

Embodiment 3

[0116] The present embodiment prepares alumina according to the following method:

[0117] (1) Add 200g n-butanol, 15g aluminum powder and 1.5g mercuric iodide into the autoclave, turn on the stirrer and control the rotating speed to be 1200r / min, the reaction temperature is 200°C, and the pressure is 5.0MPa to react for 1 hour, and then At 150°C, use a 1200-mesh filter to filter to obtain an aluminum n-butoxide solution, wherein the aluminum n-butoxide is 220g;

[0118] (2) Add the above-mentioned aluminum n-butoxide solution into the autoclave, add 500g of n-butanol, heat up to a reaction temperature of 95°C, then add 150g of deionized water into the autoclave, and stir while adding it dropwise. After the addition of deionized water was completed, all the water was evaporated by vacuuming, aged at 200°C for 24 hours, and finally filtered and dried to obtain 180g of pseudo-boehmite containing 85% n-butanol;

[0119] (3) Add the obtained pseudo-boehmite, 3g of benzoyl peroxid...

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Abstract

The present invention provides an alumina and its preparation method and use. The method comprises: (1) mixing a monohydric alcohol, an aluminum source and an initiator I, and reacting to obtain a monohydric alcohol aluminum solution; (2) mixing and reacting the monohydric alcohol, the monohydric alcohol aluminum solution and water, removing the water, and placing the alcohol in the alcohol. (3) Mix the pseudo-boehmite containing monohydric alcohol with initiator II, polymer monomer and water, heat to react, and solid Liquid separation was performed, and the obtained solid was calcined to obtain the alumina. The preparation method provided by the invention has the advantages of simple process, low production cost and easy operation, and the obtained alumina has the characteristics of high purity, high specific surface, large pore size, large pore volume, and concentrated pore size distribution with through-hole channels.

Description

technical field [0001] The invention belongs to the field of metal oxide materials and relates to a preparation method of aluminum oxide. Background technique [0002] The traditional pseudo-boehmite production methods can be divided into organic aluminum alcohol method and inorganic aluminum method. The aluminum alcohol method mainly refers to a method developed by the German Condea company to produce high-quality pseudo-boehmite using high-purity aluminum shavings and higher alcohols (n-pentanol, n-hexanol) as raw materials. Its production includes aluminum hydroxide, oxidation Cycling process for aluminium, aluminium, aluminum alkoxide and aluminum hydroxide. The company's product SB powder has high purity, good crystal form, easy control of pore structure and large specific surface area. This method has become the main method for producing alumina supports abroad, and is widely used as various catalyst supports or binders. Brunsbuttle and American Ke Charles set up fac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F7/42B01J21/04B01J35/10
CPCB01J21/04B01J35/1047B01J35/1066C01F7/42C01P2002/72C01P2004/03C01P2004/32C01P2006/12C01P2006/14C01P2006/17C01P2006/80
Inventor 吕振辉彭冲杨超
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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