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A kind of hollow multi-shell material and its preparation method and application

A shell, hollow technology, applied in chemical instruments and methods, carbon monoxide, physical/chemical process catalysts, etc., to achieve the effects of simple and easy preparation method, large capacity and high reduction efficiency

Active Publication Date: 2021-04-27
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the firing procedure can be controlled, it is expected to synthesize hollow multi-shell layers from metal-organic framework materials and complexes on the basis of maintaining the original periodicity, and to prepare hollow multi-shell layers with crystal plane orientation by using metal-organic framework materials and complexes as templates. The shell has not been reported so far

Method used

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  • A kind of hollow multi-shell material and its preparation method and application
  • A kind of hollow multi-shell material and its preparation method and application
  • A kind of hollow multi-shell material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The invention provides a method for preparing a hollow multi-shell material, the preparation method comprising:

[0047] The metal-organic framework material was heated up to 425°C at a rate of 0.5°C / min in a tube furnace in a mixed atmosphere of oxygen and nitrogen at a volume ratio of 1:9, and held for 1 hour to obtain a hollow multi-shell material.

[0048] The preparation method of the metal-organic framework material is as follows: rapidly mixing the metal salt solution and the organic ligand solution with a molar ratio of 1:4, stirring for 2 minutes to obtain the mixture, and standing and aging at 40° C. for 30 hours.

[0049] Wherein, the metal salt solution is a methanol solution of cobalt chloride, and the organic ligand solution is a methanol solution of dimethylimidazole.

Embodiment 2

[0051] The difference between this embodiment and Embodiment 1 is that in this embodiment, the volume ratio of oxygen and nitrogen in the mixed atmosphere is 1:4.

Embodiment 3

[0053] The only difference between this example and Example 2 is that in this example, the aging temperature in the preparation method of the metal organic framework material is room temperature.

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Abstract

The invention provides a hollow multi-shell material and its preparation method and application. The hollow multi-shell material has a specific crystal plane orientation. In the preparation method, the metal-organic framework material and / or the metal complex are calcined in a mixed atmosphere of oxygen and protective atmosphere to obtain the hollow multi-shell material. The hollow multi-shell material has a specific crystal plane orientation, has excellent catalytic performance, and the preparation method is simple to operate.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a hollow multi-shell material and its preparation method and application. Background technique [0002] Since Wang Dan's research group first proposed the sequential template method in 2009 (J.Phys.Chem.C.J.Phys.Chem.C.2009, 113, 2792-2797.), hollow multi-shell structures have been used in lithium-ion batteries and supercapacitors. , electrocatalysis, photocatalysis, photoelectric catalysis, drug sustained release and other systems have more and more extensive applications. Materials with specific crystal orientations show significant advantages in catalytic activity and catalytic product selectivity (Sci. Rep. 2015, 5, 8515.), but the building blocks of traditional hollow multi-shell structures are irregular Therefore, the synthesis of hollow multi-shell structures capable of exposing high-performance active crystal faces is expected to further enhance the catalyst a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/06B01J23/75B01J23/755B01J23/745B01J23/72C01B32/40
CPCB01J23/06B01J23/75B01J23/755B01J23/745B01J23/72C01B32/40B01J35/39
Inventor 王丹王力万家炜赵亚松
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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