Preparation method for pseudo-boehmite and alumina

A technique of pseudo-boehmite and alumina, applied in the field of preparation of pseudo-boehmite and alumina, can solve the problems of uneven pore size, low crystal phase purity, unstable products, etc., and achieves short reaction time, alcohol and other problems. The effect of high purity and single crystal phase of aluminum
CN106946280AActive Publication Date: 2017-07-14BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
Publication Date
2017-07-14

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Abstract

The invention provides a method for preparing pseudo-boehmite and alumina from higher fatty alcohol. The method comprises the following preparation steps: (1) preparing aluminum alkoxide; (2) carrying out filtering; (3) carrying out a hydrolysis reaction; (4) separating alcohol; (5) carrying out aging and distilling the alcohol; (6) carrying out spray drying so as to obtain high-purity pseudo-boehmite; and (7) carrying out calcining and crushing so as to obtain alumina. The method provided by the invention overcomes the disadvantages of difficult purification, uneasy recycling and utilization of lower alcohol and safety problem in preparation of aluminum alkoxide from the lower alcohol. The preparation process is environment-friendly and does not discharge three wastes; recovered alcohol and solvents can be recycled after treated; and obtained products can be extensively applied to carriers of catalytic reforming and catalytic hydrogenation.
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Description

Technical field

[0001] The invention belongs to the field of catalyst materials, and is specifically a preparation method of pseudo-boehmite and alumina. Background technique

[0002] High-purity pseudo-boehmite and alumina are important materials for catalyst carriers, integrated circuit substrates, transparent phosphors, functional single crystals, precision instruments and aviation functional devices. Pseudo-boehmite is an important intermediate for the synthesis of various activated aluminas, and its performance has an important influence on the performance of alumina. The research and development of high-purity pseudo-thin water preparation methods have been carried out for many years, and industrial-scale production has been carried out abroad. Condea, Germany, uses metal aluminum powder and n-hexanol to produce high-purity SB powder (such as US4590289). It has built industrial equipment with a capacity of 10,000 tons per year. The products are sold well all over the world...

Claims

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