A kind of iron-cobalt alloy microstructure catalyst material, preparation method and application

An iron-cobalt alloy, microstructure technology, applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of single synthesis, cumbersome synthesis process and harsh conditions problem, to achieve the effect of high catalytic efficiency, good circulation effect and low production cost

Active Publication Date: 2019-10-11
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, the synthesis method requires a high-temperature process, the morphology control is single, and the synthesis process is cumbersome and the conditions are harsh; and the performance research of the iron-cobalt alloy is mainly focused on adjusting the magnetic properties by adjusting the morphology and composition. However, there are still relatively few studies on the catalytic performance of iron-cobalt alloys.

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  • A kind of iron-cobalt alloy microstructure catalyst material, preparation method and application
  • A kind of iron-cobalt alloy microstructure catalyst material, preparation method and application
  • A kind of iron-cobalt alloy microstructure catalyst material, preparation method and application

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Embodiment 1

[0044] An iron-cobalt alloy microstructure catalyst material has a three-dimensional wheat spike structure, and the size of the wheat spike structure iron-cobalt alloy material is 4.0-10.0 microns.

[0045] A preparation method for an iron-cobalt alloy microstructure catalyst material, the steps comprising:

[0046]A. Dissolve cobalt chloride hexahydrate and ferric chloride hexahydrate in the mixed solvent formed by ethanol, ethylene glycol and deionized water under stirring to form a uniform solution; wherein the total concentration of metal ions is 0.025 mol / L, the molar ratio of cobalt ion to iron ion is 7:3; the volume ratio of ethanol, ethylene glycol, and deionized water in the mixed solvent is 4:1:0;

[0047] B. Dissolve sodium hydroxide in hydrazine hydrate with a concentration of 85% to form a solution, add it to the above metal salt solution under stirring to form a uniform solution, and then transfer it to polytetrafluoroethylene with a filling degree of 60% In an ...

Embodiment 2

[0053] An iron-cobalt alloy microstructure catalyst material has a three-dimensional wheat ear-like structure, and the size of the wheat ear-shaped iron-cobalt alloy microstructure is 3.0-7.5 microns.

[0054] A preparation method for an iron-cobalt alloy microstructure catalyst material, the steps comprising:

[0055] A. Dissolve cobalt nitrate hexahydrate and ferric nitrate nonahydrate in a mixed solvent formed by methanol, ethylene glycol, and deionized water, and stir fully to form a uniform solution; wherein the total concentration of metal ions is 0.025mol / L, The molar ratio of cobalt ions to iron ions is 6.5:3.5; the volume ratio of methanol, ethylene glycol, and deionized water in the mixed solvent is 4:1:0;

[0056] B. Sodium hydroxide is dissolved in hydrazine hydrate with a mass concentration of 60% to form a solution, which is added to the metal salt solution prepared in step A under stirring to form a uniform solution, and then transferred to a 60% filling In a p...

Embodiment 3

[0059] An iron-cobalt alloy microstructure catalyst material has a three-dimensional wheat ear-like structure, and the size of the wheat ear-shaped iron-cobalt alloy microstructure is 4.0-10 microns.

[0060] A preparation method for an iron-cobalt alloy microstructure catalyst material, the steps comprising:

[0061] A. Dissolve cobalt acetate tetrahydrate and ferrous chloride tetrahydrate in the mixed solvent formed by ethanol, glycerol and deionized water under stirring, and add surfactant PVP to form a uniform solution; The total concentration is 0.05mol / L, the molar ratio of cobalt ion to iron ion is 7:3; the volume ratio of ethanol, glycerol, and deionized water in the mixed solvent is 4:0.5:0.5; the concentration of PVP is 0.05mol / L;

[0062] B. A certain amount of sodium hydroxide is dissolved in hydrazine hydrate with a mass concentration of 80% to form a solution, which is added to the above-mentioned metal salt solution under stirring to form a uniform solution, an...

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Abstract

The invention provides a ferro-cobalt micro-structural catalyst material, as well as a preparation method and application thereof. Compared with the prior art, the preparation method has the advantages that the ferro-cobalt alloy material having an ear-shaped structure is prepared by a solvothermal method under a mild reacting condition, and the appearance of the ferro-cobalt alloy material is not reported so far; the structure has excellent magnetic performance, the catalyst material can be quickly separated and reclaimed by utilizing magnet in a cyclically catalyzing experiment, and the catalyst can be conveniently washed and cyclically utilized; the ferro-cobalt alloy catalyst material is low in production cost, short in flow and low in requirement for equipment, is easy for scale-up experiments and can realize industrial production; and the ferro-cobalt alloy micro-structure can be used in p-nitrophenol reduction to show the advantages of high reaction speed, high catalyzing efficiency, good circulation effect, low cost and the like.

Description

technical field [0001] The invention belongs to the field of preparation technology and application of new materials, and in particular relates to an iron-cobalt alloy microstructure catalyst material, a preparation method and application. Background technique [0002] Iron-cobalt alloy has attracted people's attention because of its unique soft magnetic material properties such as high saturation magnetization, high Curie temperature, low coercive force, high magnetic permeability and low magnetic anisotropy constant, and has been widely used in micro Electromechanical systems, aerospace generators, computer read / write heads, magnetic keys, and the automotive industry. Therefore, the study of micro-nanostructures of iron-cobalt alloys with different morphologies has aroused widespread interest from all over the world. [0003] Liqing Pan et al. (Journal of Alloys and Compounds, 2013, 550, 423) prepared flower-like iron-cobalt alloy nanostructures by hydrothermal method, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75B01J37/16C07C213/02C07C215/76
CPCC07C213/02B01J23/75B01J37/16B01J35/33B01J35/40B01J35/50C07C215/76
Inventor 吴孔林刘坤魏先文蔡亚苗吴昕华陈琨
Owner ANHUI NORMAL UNIV
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