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Method for fabricating aluminum alkoxide

A manufacturing method and technology for aluminum alkoxide, applied in the field of manufacturing aluminum alkoxide, can solve the problems of increased manufacturing cost of aluminum alkoxide, denaturation of aluminum alkoxide mixture, unsafe production of aluminum alkoxide, etc., so as to improve the conversion rate, reduce the addition amount, and reduce impurities. The effect of content

Active Publication Date: 2005-03-30
ZHEJIANG YUDA CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deficiency that this kind of method exists is: all need carry out under the low-pressure state of separating the excess alcohol and distillation aluminum alcohol product, especially distillation generally needs below 10 millimeters of mercury, so on the one hand is that the manufacturing cost of aluminum alcohol increases, and on the other hand On the one hand, there are unsafe factors in the production of aluminum alcohol; at the same time, distillation needs to heat the aluminum alcohol mixture to a relatively high temperature, which will denature the aluminum alcohol mixture and affect the yield of the product
[0006] The preparation method of aluminum isopropoxide disclosed in Japanese patent on September 1, 1992 (publication number: JP4-244037), has introduced a kind of preparation method of aluminum isopropoxide, and it is the black color obtained after metal aluminum and alcohol reaction. After the mixture is cooled, aluminum isopropoxide is obtained by filtering by adding filter aids. Although the filtration is carried out under normal pressure in this method, which avoids the shortage of traditional process safety, part of the product will be absorbed due to the addition of filter aids. Active ingredients, resulting in a decline in product yield

Method used

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  • Method for fabricating aluminum alkoxide
  • Method for fabricating aluminum alkoxide

Examples

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Effect test

Embodiment 1

[0018] In a 3-liter three-necked flask with a reflux condenser, put 150g of aluminum particles with a purity of 99%, 0.5g of anhydrous aluminum trichloride, and 1kg of methyl acetate solvent, then add 0.5kg of isopropanol, stir and heat. Control the temperature of the solution at about 60°C for reflux reaction. After 2 hours, a black aluminum isopropoxide mixture solution is obtained, and the material is discharged by suction. After 24 hours of settlement, the upper layer is sucked out of a colorless and transparent solution, which contains aluminum isopropoxide 36%, heating to 60°C to start distillation, with the evaporation of methyl acetate, the distillation temperature is gradually increased, when it reaches 80°C, stop heating, and after cooling, the finished product of aluminum isopropoxide is obtained, in which the impurity content of metal and metal oxide is 0.01% the following. The evaporated methyl acetate can be recycled.

Embodiment 2

[0020] In a 3-liter three-neck flask with a reflux condenser, put 150g of aluminum particles with a purity of 99%, 0.5g of anhydrous aluminum trichloride, 1.2kg of ethyl acetate solvent, and then add 0.4kg of isopropanol, stir and heat , control the temperature of the solution at about 80°C for reflux reaction. After 2 hours, a black aluminum isopropoxide mixture solution is obtained, and the material is discharged by suction. After 30 hours of settlement, the upper layer is sucked out of a colorless and transparent solution, which contains isopropanol Aluminum 2 7%, heating to 80 ° C to start distillation, with the evaporation of ethyl acetate, the distillation temperature is gradually increased, when it reaches 97 ° C, stop heating, and after cooling, the finished product of aluminum isopropoxide is obtained, in which the content of metal and metal oxide impurities is 0.01% or less. The evaporated ethyl acetate can be recycled.

Embodiment 3

[0022] In a 3-liter three-neck flask with a reflux condenser, put 150g of aluminum particles with a purity of 99%, 0.14g of anhydrous aluminum trichloride, 1kg of isopropyl acetate solvent, and then add 0.4kg of isopropanol, stir and heat , control the temperature of the solution at about 90°C for reflux reaction, after 2 hours, a black aluminum isopropoxide mixture solution is obtained, the material is pumped out, and after 15 hours of settlement, the upper layer is sucked out of a colorless and transparent solution, which contains isopropanol Aluminum 30%, heating to 90 ° C to start distillation, with the evaporation of isopropyl acetate, the distillation temperature is gradually increased, when it reaches 110 ° C, stop heating, and after cooling, the finished product of aluminum isopropoxide is obtained, in which the content of metal and metal oxide impurities is 0.01% or less. The evaporated isopropyl acetate can be recycled.

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Abstract

A process for preparing alcoholic aluminum by alcohol and aluminum incldues such steps as heat refluxnig alcohol, aluminum and initiator in acetic ester solvent to get alcoholic aluminum acetic ester solution, separating and vaporization to get alcoholic aluminum (the ratio between alcohol and acetic aster is 1:2-3, aluminum add overdose). The acetic ester is Methyl acetate, acetic ether, benzyl acetate, isopropyl acetate or butyl acetate, aluminum is aluminum granule or aluminum crumbs or aluminum powder, its perfidy is higher than 99%.

Description

technical field [0001] The invention relates to a method for producing metal organic compounds, in particular to a method for producing aluminum alkoxide. Background technique [0002] Aluminum alcohol is an important basic metal organic chemical raw material, which is widely used in organic synthesis intermediates, pharmaceuticals, pesticides and other organic synthesis industries, especially the rapid development of fine chemical industry, and the variety of organic chemicals is increasing day by day. The demand for aluminum isopropoxide is increasing day by day, especially the market demand for aluminum isopropoxide. [0003] Alcohol and aluminum can produce aluminum alkoxide under the action of catalyst, and its reaction is as follows: [0004] [0005] The traditional production of aluminum alcohol is to react by heating and dissolving metal aluminum and excess alcohol under the action of a catalyst, and then separate out the excess alcohol and then distill the alum...

Claims

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Application Information

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IPC IPC(8): C07C29/70C07C31/28
Inventor 章浩龙
Owner ZHEJIANG YUDA CHEM IND
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