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Method for preparing luminescent material 8-hydroxyquinoline aluminum by hot melt reaction

A technology of aluminum hydroxyquinoline and hydroxyquinoline, applied in the field of direct preparation of pure 8-hydroxyquinoline aluminum by hot-melt method, which can solve the problem of excessive precipitant 8-hydroxyquinoline, difficulty in large-scale industrial production, separation and purification process Complicated problems, to achieve the effect of improving environmental friendliness, eliminating side effects, and reducing production costs

Inactive Publication Date: 2016-04-13
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not difficult to see that the separation and purification process is quite complicated
Therefore, the existing methods for preparing the luminescent material 8-hydroxyquinoline aluminum are difficult to industrialized production in large quantities.
Due to factors such as the use of organic solvents, long process flow, small production scale, and excessive amount of precipitant 8-hydroxyquinoline, the production cost of the existing luminescent material 8-hydroxyquinoline aluminum remains high.
Moreover, the discharge of wastewater containing 8-hydroxyquinoline aluminum and organic solvents (such as ethanol) has a greater impact on the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] According to the molar ratio of 8-hydroxyquinoline: aluminum chloride = 3:1, 435.48 kg of 8-hydroxyquinoline and 133.34 kg of aluminum chloride were added to the reactor, and the temperature was raised to 90°C for 3 hours. After completion of the reaction, cool to room temperature and discharge to obtain 8-hydroxyquinoline aluminum with a purity of 99%.

[0012] The hydrogen chloride gas produced by the reaction is recovered by deionized water absorption method to obtain hydrochloric acid.

Embodiment 2

[0014] According to the molar ratio of 8-hydroxyquinoline: aluminum chloride = 3:1, 435.48 kg of 8-hydroxyquinoline and 133.34 kg of aluminum chloride were added to the reactor, and the temperature was raised to 100 ° C for 2 hours. After completion of the reaction, cool to room temperature and discharge to obtain 8-hydroxyquinoline aluminum with a purity of 97%.

[0015] The hydrogen chloride gas produced by the reaction is recovered by deionized water absorption method to obtain hydrochloric acid.

Embodiment 3

[0017] According to the molar ratio of 8-hydroxyquinoline: aluminum chloride = 3:1, 435.48 kg of 8-hydroxyquinoline and 133.34 kg of aluminum chloride were added to the reactor, and the temperature was raised to 80 ° C for 4 hours. After completion of the reaction, cool to room temperature and discharge to obtain 8-hydroxyquinoline aluminum with a purity of 97%.

[0018] The hydrogen chloride gas produced by the reaction is recovered by deionized water absorption method to obtain hydrochloric acid.

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PUM

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Abstract

A method for preparing luminescent material 8-hydroxyquinoline aluminum by thermal melting reaction. With 8-hydroxyquinoline and anhydrous aluminum chloride as reaction raw materials, hot melt method directly prepares pure 8-hydroxyquinoline aluminum, specifically realizes through the following steps: according to the molar ratio is 8-hydroxyquinoline: aluminum chloride= 3:1, the reaction raw material 8-hydroxyquinoline and aluminum chloride are alternately added to the reactor, the temperature is raised to 80 ° C ~ 100 ° C, and the reaction is 2? h~4? h. After the reaction is completed, cool to room temperature and discharge to obtain aluminum 8-hydroxyquinoline with a purity of 97% to 99%. The invention has the advantages of short flow process, high yield, no waste liquid discharge, low production cost, friendly environment and the like.

Description

Technical field [0001] The present invention involves a method of preparation of optical aluminum aluminum aluminum aluminum aluminum aluminum, especially the water-free aluminum chloride and 8-hydroxylinoline as the raw material.Method of aholine aluminum. Background technique [0002] 8-hydroxyl-pheasin aluminum, which is more than 95%of the purity, has good luminescence characteristics, film formability and thermal stability, and is one of the best luminous materials at present.At present, the method of preparing 8-hydroxylin aluminum is a liquid-phase method composed of water and organic solvents. Typical representatives are the water-ethanol system.Usually use 8-hydroxyl-pheasin and water-soluble aluminum salt as the main raw material. The organic solvents are used to dissolve 8-hydroxyl achinoline.EssenceHowever, due to the effects of chemicals such as oxygen and water in the aqueous solution, there is inevitable side effects such as polymerization during the synthesis proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D215/30
CPCC07D215/30
Inventor 钟学明
Owner NANCHANG HANGKONG UNIVERSITY