Preparation method for high-purity alumina

A kind of alumina, high-purity technology, applied in the field of high-purity alumina preparation, can solve the problems of insufficient purity of alumina powder, easy blockage of pipelines, difficult transportation, etc., to reduce preparation costs, good working conditions, and preparation The effect of simple process
CN102491391AInactive Publication Date: 2012-06-13DALIAN JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN JIAOTONG UNIVERSITY
Publication Date
2012-06-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

A preparation method for high-purity alumina powder includes: preparing aluminum alkoxide in liquid state at the room temperature by means of reaction of metallic aluminum with sec-butyl alcohol, using the reduced pressure distillation method for purifying, and preparing the high-purity alumina powder by means of hydrolyzing, reduced pressure distillation and calcinations. Using the method to prepare high-purity alumina powder has the advantages of simple preparation process, no pollution, low energy consumption, fine operating conditions, zero emission and the like. The alumina powder prepared by the method is applicable to the field of catalysts and can also be applied to the fields of laser crystals, sapphires, transparent alumina ceramics, sodium lamps, metal halides, high-grade abrasives and the like.
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Description

technical field

[0001] The invention relates to a method for preparing high-purity alumina, which belongs to the technical field of catalyst preparation. Background technique

[0002] A preparation technology of high-purity alumina powder, which uses organic synthesis method to synthesize metal alkoxide which is liquid at room temperature by using metal aluminum and organic alcohol, and prepares high-purity alumina powder through purification, hydrolysis, hydrothermal treatment, vacuum drying and calcination body. The invention has the characteristics of no pollution in the technological process, easy transport of the synthesized alkoxide, good uniformity of the hydrolysis process, convenient and controllable alcohol recovery, good dispersibility of the product powder, controllable particle size and particle size distribution, and the like.

[0003] With the rapid development of high-tech industry, the demand for high-purity alumina powder is increasing day by day, and the ...

Claims

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