Aluminum oxide and preparation method and application thereof

A technology of alumina and aluminum alkoxide, which is applied in the fields of alumina/hydroxide preparation, chemical instruments and methods, and inorganic chemistry, and can solve problems such as low crystallinity and purity of alumina, inability to realize continuous production, and complicated preparation process , to achieve the effect of low production cost, easy operation and simple process
CN112062145AActive Publication Date: 2020-12-11INST OF PROCESS ENG CHINESE ACAD OF SCI
14 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2020-12-11

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention provides aluminum oxide as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) reacting an aluminum source, alcohol and an initiator, and separating to obtain aluminum alkoxide; (2) adding the aluminum alkoxide obtained in the step (1) into water for hydrolysis to obtain pseudo-boehmite turbid liquid; and (3) adding an alcohol-water mixed solution and aluminum alkoxide into the pseudo-boehmite turbid liquid obtained in the step (2), keeping the concentration of the pseudo-boehmite turbid liquid unchanged, adding the pseudo-boehmite turbid liquid into an aging kettle for aging, and roasting an obtained aging product to obtain the aluminum oxide. The preparation method is simple in process, low in production cost and easy to operate, and the prepared aluminum oxide is high in crystallinity and purity, good in crystal form and controllable in structure.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of metal oxide materials, and relates to aluminum oxide and its preparation method and application. Background technique

[0002] At present, the preparation methods of pseudo-boehmite are divided into organic method and inorganic method. Among them, the organic method is mainly the aluminum alcohol hydrolysis method, which is a method of producing high-quality pseudo-boehmite from high-purity aluminum shavings and higher alcohols (n-pentanol, n-hexanol), and its production includes aluminum hydroxide , aluminum oxide, aluminum, aluminum alcohol and aluminum hydroxide cycle process. The pseudo-boehmite prepared by the method has high purity and crystallinity, good crystal form, easy control of pore structure and large specific surface area. However, the hydrolysis of aluminum alcohol to prepare macroporous alumina is mainly batch-type, and the production efficiency is low.

[0003] CN 110395756 A discloses a method...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More