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Preparation method for copper aluminate spinel porous block

A technology of spinel and copper aluminate is applied in the field of preparation of copper aluminate spinel porous block, which can solve the problem of no patent report on copper aluminate spinel porous block, and achieves high porosity, Simple process and easy recycling

Active Publication Date: 2017-10-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But so far there is no patent report on the preparation of copper aluminate spinel porous block

Method used

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  • Preparation method for copper aluminate spinel porous block
  • Preparation method for copper aluminate spinel porous block
  • Preparation method for copper aluminate spinel porous block

Examples

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Embodiment 1

[0037] Embodiment 1, a preparation method of a copper aluminate spinel porous block, polyethylene oxide is a phase separation inducer, citric acid monohydrate is a complexing agent, and 1,2-propylene oxide is a gel accelerator, Follow the steps in order:

[0038] 1), 0.075g of polyethylene oxide was dissolved in a solvent (the solvent consisted of 3.7ml of deionized water and 2.5ml of absolute ethanol), and stirred for 10min to obtain a uniform solution (phase separation inducer solution);

[0039] 2), 0.005mol copper chloride dihydrate, 0.01mol (2.41g) aluminum chloride hexahydrate and 3g citric acid (citric acid monohydrate) are dissolved in the solution obtained in step 1), stirring chlorine dihydrate at room temperature Copper chloride, aluminum chloride hexahydrate and citric acid were all dissolved to obtain a dark green clear solution;

[0040] 3) Slowly add 2.4ml of 1,2-propylene oxide to the dark green clear solution obtained in step 2) dropwise (2 minutes to complet...

Embodiment 2

[0049]Example 2, the preparation method of copper aluminate spinel porous block, change the heat treatment temperature in step 7) of Example 1 from 600°C to 800°C, and the rest are the same as Example 1.

[0050] The prepared porous copper aluminate spinel porous block remains intact, and its internal microstructure is as follows: Figure 4 As shown, with a small amount of shrinkage, the co-continuous pore structure is not destroyed, and the porous copper aluminate spinel porous block can still be obtained, the porosity increases to 63.5%, the pore volume is 0.460ml / g, and the pore size distribution is 1.8 μm.

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Abstract

The invention discloses a preparation method for a copper aluminate spinel porous block. The preparation method comprises the following steps: first, dissolving a phase separation inducing agent in a solvent; then, adding copper chloride dihydrate, aluminium chloride hexahydrate and a complexing agent, and stirring until the copper chloride dihydrate, the aluminium chloride hexahydrate and the complexing agent are completely dissolved; next, adding a gelatinization accelerator dropwise and stirring uniformly to obtain a homogeneous solution; later on, sealing the homogeneous solution in a container, and gelatinizing for 1 to 5 minutes at 60 to 80 DEG C to obtain wet gel; finally, aging the wet gel for 6 to 12 hours at 60 to 80 DEG C, drying the aged wet, and performing heat treatment for 1 to 3 hours at 500 to 900 DEG C to obtain the copper aluminate spinel porous block.

Description

technical field [0001] The invention relates to a method for preparing a copper aluminate spinel porous block, in particular to a method for preparing a copper aluminate spinel porous block by using inorganic copper salts and inorganic aluminum salts as precursors. Background technique [0002] Double metal oxides with a spinel structure are an important class of inorganic semiconductor functional materials. This material has the characteristics of high hardness, high melting point, stable chemical properties, good mechanical properties, and excellent optical and electrical properties. It is used in catalytic materials. , electromagnetic materials, optical materials and so on have a very wide range of applications. Especially in the field of catalysis, the use of spinel materials as catalysts or as catalyst supports has become a hot spot in the industrial field in recent years. Among them, copper aluminate spinel has a relatively narrow band gap, so it can use natural visib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/44C04B35/624C04B38/00
CPCC04B35/44C04B35/624C04B38/007C04B2235/3281C04B2235/6562C04B38/0054
Inventor 郭兴忠尹朋岸杨辉
Owner ZHEJIANG UNIV
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