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Method for preparing colloidal sol containing chloride and aluminium

A technology of aluminum sol and sol, which is applied in the field of preparation of aluminum sol containing chloride, can solve problems such as corrosion and difficult industrial application, and achieve the effects of improving safety, reducing corrosion, and reducing costs

Active Publication Date: 2006-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this polyaluminum chloride to prepare cracking catalysts will have serious corrosion problems, making it difficult for industrial applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Take 6.5 grams of general formula as Al 2 (OH) 2.9 Cl 3.1 polyaluminum chloride, which contains Al 2 o 3 29.0% by mass, 31.8% by mass of Cl, 0.041% by mass of Fe, 0.05% by mass of Na, and 0.08% by mass of Ca were dissolved in 10 ml of water, and 1.3 g of metallic aluminum with a purity of 99.5% by mass was added. Stirred and reacted for 7.5 hours, filtered to obtain 16.71 grams of aluminum sol, which contained Al through analysis and testing 2 o 3 13.07% by mass (theoretical value is 14.02%, the same below), the mass ratio of Al / Cl is 0.6, the pH is 2.0 to 3.0, the Fe content is less than 0.004% by mass, and 80.5% by mass of Al in the aluminum sol is composed of polyaluminum chloride supply.

example 2

[0023] Prepare aluminum sol by the method for example 1, difference is that reaction temperature is 80 ℃, obtains 17.64 grams of aluminum sol, wherein contains Al 2 o 3 21.48% by mass (24.35% by mass), the Al / Cl mass ratio is 1.1, the pH is 3.0-3.5, the Fe content is less than 0.002% by mass, and 43.9% by mass of Al in the aluminum sol is provided by polyaluminum chloride.

example 3

[0025] Prepare aluminum sol by the method for example 1, difference is that reaction temperature is 95 ℃, obtains 17.67 grams of aluminum sol, wherein contains Al 2 o 3 22.53% by mass (24.75% by mass), the Al / Cl mass ratio is 1.12, the pH is 3.0-3.5, the Fe content is less than 0.002% by mass, and 43.1% by mass of Al in the aluminum sol is provided by polyaluminum chloride.

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PUM

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Abstract

The invention discloses a method for preparing chlorine-contained Aluminum Sol. The method is as follow: make polymerized aluminum chloride water solution whose formula is Al2(OH)1-3Cl3-5 fully contact and react with metal aluminum to prepare a aluminum sol in which the content of aluminum is 5-13 mass% and the mass ratio of AL / CL is 0.6-2.0. In the invention polymerized aluminum chloride is used to replace partial metal aluminum to produce aluminum sol, hydrochloric acid isn't used, so the corrosion to equipment is less, hydrogen exhaust amount is low, operation is more safety and cost is reduced.

Description

technical field [0001] The invention relates to a method for preparing aluminum sol, in particular to a method for preparing aluminum sol containing chloride. Background technique [0002] Aluminum sol is an inorganic polymer compound with high temperature resistance and good bonding performance. It is widely used as a catalyst binder, such as a binder for catalytic cracking catalysts. Generally, aluminum sol raw materials account for 20% of the cost of hydrocarbon catalytic cracking catalysts. %above. At present, the industrial production of aluminum sol is mainly made by reacting metal aluminum and hydrochloric acid at 70-103°C, which is called metal aluminum sol. US4028216 describes in detail the method of preparing metal aluminum sol by reacting metal aluminum and hydrochloric acid. The preparation method of aluminum sol disclosed in US4,032,472 firstly dissolves sufficient amount of alumina particles in hydrochloric acid or hydrofluoric acid to provide 5-25wt% metal al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/00B01J13/00
Inventor 魏祥张玉红
Owner CHINA PETROLEUM & CHEM CORP
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