Hierarchical porous nickel-aluminum alloy membrane with electrocatalytic performance and preparation method thereof

A nickel-aluminum alloy, electrocatalysis technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of poor universality, poor corrosion resistance, mechanical strength To achieve the effect of no secondary pollution, environmental friendliness, and improved processing capacity

Inactive Publication Date: 2018-11-23
宁波杰士兄弟工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The membrane material in the membrane separation method is the key factor in determining the electrocatalytic reactor. The development of organic membranes and ceramic membranes has gradually provided a mature preparation process, but there are also inevitable shortcomings, such as poor universality, poor corrosion resistance, and mechanical strength. Poor

Method used

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  • Hierarchical porous nickel-aluminum alloy membrane with electrocatalytic performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of the multi-level porous nickel-aluminum alloy film with electrocatalytic performance specifically provided in this example includes the following steps: (1) mixing of metal powder: Weigh Ni and Al powder with a mass ratio of 60:40, and fully mix them uniformly; (2) Compression of powder: Add the uniformly mixed metal powder into the mold and pressurize to 20MPa, hold the pressure for 5min to obtain a nickel-aluminum alloy film with a thickness of 2mm; (3) High temperature sintering: take out the nickel-aluminum alloy film and heat The hydrogen atmosphere is used for reduction in the tube furnace. The sintering procedure is as follows: firstly, the temperature is raised from room temperature to 460°C at 2°C / min, and held for 2 hours; then the temperature is raised to 660°C at 2°C / min, and held for 2 hours; 2h; after that, the temperature was raised to 1130°C for 4h, and finally the temperature was raised to 1300°C, and kept for 4h to obtain the ni...

Embodiment 2

[0025] The preparation method of the multi-level porous nickel-aluminum alloy film with electrocatalytic performance specifically provided in this example includes the following steps: (1) mixing of metal powder: Weigh Ni and Al powder with a mass ratio of 65:35, and fully mix them uniformly; (2) Compression of powder: Add the uniformly mixed metal powder into the mold and pressurize to 20MPa, hold the pressure for 5min to obtain a nickel-aluminum alloy film with a thickness of 10mm; (3) High temperature sintering: take out the nickel-aluminum alloy film and heat The hydrogen atmosphere is used for reduction in the tube furnace. The sintering procedure is as follows: firstly, the temperature is raised from room temperature to 470°C at 2°C / min, and held for 2 hours; then the temperature is raised to 600°C at 2°C / min, and held for 2 hours; After that, the temperature was raised to 1130° C. for 8 hours, and finally the temperature was raised to 1300° C. and kept for 12 hours to ob...

Embodiment 3

[0028] The preparation method of the multi-level porous nickel-aluminum alloy film with electrocatalytic performance specifically provided in this example includes the following steps: (1) mixing of metal powder: Weigh Ni and Al powder with a mass ratio of 80:20, and fully mix them uniformly; (2) Compression of powder: Add uniformly mixed metal powder into the mold and pressurize to 20MPa, hold the pressure for 5min to obtain a nickel-aluminum alloy film with a thickness of 5mm; (3) High temperature sintering: take out the nickel-aluminum alloy film and heat The hydrogen atmosphere is used for reduction in the tube furnace. The sintering procedure is as follows: firstly, the temperature is raised from room temperature to 350°C at 2°C / min, and held for 2 hours; then the temperature is raised to 700°C at 2°C / min, and held for 2 hours; 2h; then raise the temperature to 1100°C and keep it warm for 12h to obtain a nickel-aluminum alloy film sintered body; (4) take out the nickel-alu...

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Abstract

The invention discloses a hierarchical porous nickel-aluminum alloy membrane with the electrocatalytic performance and a preparation method thereof. According to the method, a certain proportion of nickel-aluminum powder is taken, is mixed and pressed, and then is molten into a porous alloy membrane in a sintering mode, then the interior of the porous alloy membrane is enabled to form a microporous morphology through chemical corrosion, the alloy membrane forms a nano-pore structure with high specific surface area and high catalytic activity due to the fact that nickel-aluminum alloy is corroded by sodium hydroxide, so that the membrane separation and the electrocatalysis function are integrated without adding an additional supported catalyst, and therefore the processing capacity of the alloy membrane to dye wastewater is greatly improved, and the decolorization rate of the alloy membrane at the maximum flux is increased from 55% to 95% or above.

Description

technical field [0001] The invention belongs to the technical field of separation and degradation of printing and dyeing wastewater, and in particular relates to a multi-level porous nickel-aluminum alloy membrane with electrocatalytic performance, and also relates to a preparation method of the nickel-aluminum alloy membrane. Background technique [0002] In recent years, water pollution has become one of the most serious problems that people face, and the discharge of industrial wastewater is the most important. In the entire industrial wastewater, the discharge of printing and dyeing wastewater accounts for 35% of the total industrial wastewater discharge. Printing and dyeing wastewater has the characteristics of complex composition, deep color, many toxic substances, high chemical oxygen demand (COD), and difficult treatment. The traditional biological treatment process has been seriously challenged, and the removal rate of this type of printing and dyeing wastewater by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/10C02F1/461C02F101/30
CPCB01J23/755B01J35/0033B01J35/10C02F1/46109C02F2001/46133C02F2101/308
Inventor 康建立陈毅桓董学
Owner 宁波杰士兄弟工具有限公司
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