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A kind of ni-fe-mo-cu porous material and preparation method thereof

A ni-fe-mo-cu, porous material technology, applied in separation methods, chemical instruments and methods, metal processing equipment, etc. High temperature and alkali corrosion resistance, long service life, uniform distribution effect

Active Publication Date: 2020-02-07
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an effective porous material for electrolysis of hydrogen and industrial filtration, which has rich and evenly distributed pores, large specific surface area, high mechanical strength, high electrocatalytic activity, excellent corrosion resistance and chemical stability, and can solve water pollution problems. Hydrogen technology has the problems of low catalytic efficiency, poor corrosion resistance, unstable hydrogen evolution and high production cost, and overcomes the problems of low filtration efficiency, poor mechanical properties, poor stability and high maintenance cost in the field of industrial filtration

Method used

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  • A kind of ni-fe-mo-cu porous material and preparation method thereof
  • A kind of ni-fe-mo-cu porous material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Four high-purity element powders of Ni, Fe, Mo, and Cu were prepared according to the mass percentage, and the Fe content was 15%, the powder particle size was 3µm; the Mo content was 2%, the powder particle size was 3µm; the Cu content was 7% , the powder particle size is 3µm; the balance is Ni powder with a powder particle size of 10µm. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 8 hours, then add stearic acid of 1% of the total powder mass, dry for 6 hours, and cold press at 200 MPa under a cold press for 30 seconds; Place the pressed sample in a vacuum furnace at a vacuum of 1×10 -2 In the case of Pa, keep a heating rate of 5°C / min from room temperature to 240°C and keep it for 60 minutes; then raise the temperature to 300°C at a rate of 10°C / min and keep it for 100 minutes; then raise the temperature at a rate of 8°C / min to 680°C and keep at this temperature for 120min; then raise the temperature to 940°C at a heating rate o...

Embodiment 2

[0028] The four high-purity element powders of Ni, Fe, Mo, and Cu are prepared according to the mass percentage, and the content of Fe is 35%, the particle size of the powder is 10µm; the content of Mo is 5%, the particle size of the powder is 10µm; the content of Cu is 2% , the powder particle size is 3µm; the balance is Ni powder with a powder particle size of 3µm. Put the prepared powder on a V-type powder mixer and mix it at a constant speed for 10 hours, then add stearic acid of 3% of the total powder mass, dry for 12 hours, and cold press at a pressure of 50MPa under a cold press for 120s; Place the pressed sample in a vacuum furnace at a vacuum of 1×10 -3 In the case of Pa, keep the temperature rise rate of 6°C / min from room temperature to 120°C and keep it for 40 minutes; then raise the temperature to 340°C at a rate of 3°C / min and keep it for 80 minutes; then raise the temperature at a rate of 4°C / min to 480°C and keep at this temperature for 90 minutes; then raise t...

Embodiment 3

[0031] The four high-purity element powders of Ni, Fe, Mo, and Cu were prepared according to the mass percentage, and the content of Fe was 25%, the particle size of the powder was 5µm; the content of Mo was 6%, the particle size of the powder was 8µm; the content of Cu was 5% , the powder particle size is 6µm; the balance is Ni powder with a powder particle size of 7µm. Put the prepared powder on a V-type powder mixer and mix at a constant speed for 16 hours, then add 1.5% stearic acid of the total mass of the powder, dry for 11 hours, and cold press at 180 MPa under a cold press for 50 seconds; Place the pressed sample in a vacuum furnace at a vacuum of 5×10 -3 In the case of Pa, maintain a heating rate of 10°C / min from room temperature to 180°C, and keep it for 50 minutes; then raise the temperature to 420°C at a heating rate of 5°C / min, and keep it for 90 minutes; then raise the temperature at a heating rate of 5°C / min to 560°C and keep at this temperature for 95min; then...

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Abstract

The invention discloses a preparation method of a Ni-Fe-Mo-Cu porous material. In the present invention, four high-purity element powders of Ni, Fe, Mo, and Cu with a particle size of 3-10 μm are used as the ratio of 15-35% Fe, 1-8% Mo, 1-7% Cu, and Ni as the balance by mass percentage. After uniform mixing and drying, the mixed stearic acid is pressed to obtain a green body, and the green body is vacuum sintered to prepare a Ni-Fe-Mo-Cu porous material by using the principle of solid phase partial diffusion. The porous material prepared by the present invention has abundant and evenly distributed pores, has high specific surface area and mechanical strength, low hydrogen evolution overpotential, relatively excellent corrosion resistance and chemical stability, and its preparation process is simple and environmentally friendly. The field of hydrogen and industrial filtration has potential application value and is of great significance.

Description

technical field [0001] The invention relates to a preparation technology of a porous material, in particular to a preparation method of a Ni-Fe-Mo-Cu porous material which can be used in the fields of electrolysis of hydrogen and industrial filtration. Background technique [0002] With the surge of global population and economic development, energy has been regarded as the most basic demand for the development of human society. Hydrogen energy is favored because of its high energy density, cleanness and non-pollution, which can replace fossil fuels and thus facilitate the recycling of energy. At present, common hydrogen production methods include electrolysis of water to produce hydrogen, biological hydrogen production, photocatalytic hydrogen production, and fossil fuel hydrogen production. Factors such as low yield and low yield limit the large-scale production and utilization of hydrogen. Hydrogen production by electrolysis of water has incomparable advantages such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C19/03C22C1/08C25B11/06C25B11/03C25B1/04B01D39/20
CPCB01D39/2051C22C19/03C25B1/04B22F3/11B22F2998/10C25B11/031C25B11/091B22F1/10B22F3/02Y02E60/36
Inventor 吴靓杨格曾毅肖逸锋许艳飞钱锦文欧艳张乾坤段震叶明强曾毅夫周益辉
Owner XIANGTAN UNIV
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