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Preparation method of HAP (hydroxyapatite)-supported aluminum trichloride catalyst

A technology of hydroxyapatite and aluminum trichloride, which is applied in physical/chemical process catalysts, chemical instruments and methods, and condensation preparation of carbonyl compounds, etc. Good catalytic effect, corrosion solving, high loading effect

Active Publication Date: 2015-05-13
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the purposes of the present invention is to provide a method for preparing a hydroxyapatite-supported aluminum trichloride catalyst, which can not only solve the problems that the aluminum trichloride catalyst itself is easy to corrode and difficult to separate, but also retain the The catalytic activity of original aluminum trichloride

Method used

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Examples

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Effect test

preparation example Construction

[0025] A preparation method of a hydroxyapatite-supported aluminum trichloride catalyst, comprising the steps of:

[0026] 1) Take a three-necked flask equipped with drying, condensation, and stirring devices, and under the protection of inert gas nitrogen or argon, put 100-150ml of dried organic solvent into the three-necked flask, and then add 5- 10g anhydrous AlCl 3 , stir to dissolve;

[0027] The organic solvent is any one of carbon tetrachloride, absolute ethanol, toluene or chloroform.

[0028] 2) Activate hydroxyapatite (HAP) at an activation temperature of 600-900°C for 2-6 hours;

[0029] Preferably, the activation temperature is 700-800° C., and the activation time is 3-5 hours.

[0030] 3) Take 8-12 g of the hydroxyphosphine in the step 2), add it into the three-necked flask in the step 1), stir and reflux for 8-24 hours, preferably reflux for 12-18 hours, and then filter, A solid primary product is obtained;

[0031] The size of the hydroxyapatite particle si...

Embodiment 1

[0035] 1) Take a three-necked flask equipped with drying, condensing, and stirring devices. Under the protection of inert gas nitrogen, put 150ml of dried organic solvent carbon tetrachloride into the three-necked flask, and then add 5g of anhydrous AlCl 3 , stir to dissolve;

[0036] 2) Activate hydroxyapatite (HAP) at an activation temperature of 600°C for 2 hours;

[0037] 3) Take 10 g of 120-mesh hydroxyphosphide in the above step 2), add it to the three-necked flask in the above step 1), stir and reflux for 8 hours, and filter to obtain the solid primary product;

[0038] 4) Rinse the above solid primary product with the organic solvent carbon tetrachloride for 3 to 4 times, and then dry it with a vacuum dryer to obtain the final product AlCl 3 / HAP.

Embodiment 2

[0040] 1) Take a three-necked flask equipped with drying, condensing, and stirring devices, and under the protection of inert gas nitrogen, put 150ml of dried organic solvent absolute ethanol into the three-necked flask, and then add 7g of anhydrous AlCl 3 , stir to dissolve;

[0041] 2) Activate hydroxyapatite (HAP) at an activation temperature of 700°C for 3 hours;

[0042] 3) Take 12g of 140-mesh hydroxyphosphide in the above step 2), add it to the three-necked flask in the above step 1), stir and reflux for 16 hours, and filter to obtain the solid primary product;

[0043] 4) Rinse the above solid primary product with an organic solvent absolute ethanol for 3 to 4 times, and then dry it with a vacuum dryer to obtain the final product AlCl 3 / HAP.

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Abstract

The invention discloses a preparation method of an HAP-supported aluminum trichloride catalyst. The preparation method comprises the steps as follows: AlCl3 is stirred and dissolved in an organic solvent under the protection of inert gases, then an activated HAP supporter with a certain particle size is added, the mixture is stirred for backflow for 8-24h, and AlCL3 / HAP is obtained after filtration, washing and vacuum drying. The preparation method has the benefits as follows: the cheap HAP serves as the supporter, the problems of inherent strong corrosivity and toxicity of aluminum trichloride, easiness in separation between the catalyst and products and environmental pollution due to a large number of sewage produced by post-treatment are solved, a novel method for aluminum trichloride immobilization is developed, and the original catalytic activity of aluminum trichloride is reserved to a large extent; and in addition, the load of aluminum in the finally obtained catalyst product AlcL3 / HAP is high, the catalytic effect is good during actual use, and the preparation method is simple in preparation process, easy to control and low in cost.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a preparation method of a hydroxyapatite-loaded aluminum trichloride catalyst. Background technique [0002] Catalyst is a kind of substance that can change the speed of chemical reaction without itself being consumed in the reaction. The development of catalysts that effectively utilize existing resources and are environmentally friendly has become one of the important goals pursued by many scientists in the world today. AlCl 3 As one of the important catalysts widely used in chemical, petroleum and pharmaceutical industries, it is widely used in organic catalytic reactions such as alkylation, acylation and esterification. However, its application is limited due to its shortcomings such as strong corrosiveness, difficulty in separating from the product, and large post-treatment pollution. In order to solve the above problems, researchers have conducted research o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/18C07C45/46C07C49/807
Inventor 郑纯智张春勇张国华文颖颖舒莉万小菊
Owner JIANGSU UNIV OF TECH
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