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Nano-porous hydrogen production catalyst and preparation method thereof

A nanoporous and catalyst technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of anode catalyst activity and cost constraints on large-scale application of direct fuel cells, reduce catalytic efficiency, etc., to achieve improved catalytic effect, uniform distribution, The effect of increasing the stability of the material

Inactive Publication Date: 2020-03-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the activity and cost of anode catalysts have restricted the large-scale application of direct fuel cells.
If the material’s ability to absorb hydrogen is too strong, the hydrogen produced cannot be released in time and stays on the surface of the catalyst, which will also reduce the catalytic efficiency

Method used

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  • Nano-porous hydrogen production catalyst and preparation method thereof
  • Nano-porous hydrogen production catalyst and preparation method thereof
  • Nano-porous hydrogen production catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Weigh 4.507g of pure aluminum (Al), 1.600g of pure titanium (Ti), 0.708g of pure copper (Cu), and 1.185g of pure palladium (Pd). The total sample is 8g.

[0031] 2. Put the 8g sample into the argon melting furnace. After the molecular pump evacuated the high-purity argon protective atmosphere, it melted 4 times to make the internal composition of the alloy uniform. get Al 75 Cu 5 Ti 15 PD 5 alloy ingot.

[0032] 3. Afterwards, take out the alloy ingot and crush it, take the fragments and clean them with anhydrous ethanol ultrasonically, put them in a clean quartz tube, place them in a belt throwing machine, and spray the melted liquid alloy on a high-speed rotating copper roller after extracting a high vacuum On, the liquid is rapidly cooled to form amorphous strips instantly. The belt swing machine needs to draw 7×10 -3 Pa. The speed of the copper roll needs to be controlled at 3500 rpm. The pressure difference between the quartz tube and the furnace needs ...

Embodiment 2

[0038] Weigh pure aluminum, pure titanium, pure copper and pure palladium, put them into an argon smelting furnace, put high-purity argon protective atmosphere into the high-purity argon gas protective atmosphere after the molecular pump pumps high vacuum, and smelt 4 times to make the internal composition of the alloy uniform and obtain Al 60 Cu 10 Ti 15 PD 15 Alloy ingots, then take out the alloy ingots and crush them, take the fragments and ultrasonically clean them with anhydrous ethanol, place them in a clean quartz tube, place them in a belt throwing machine, and spray the melted liquid alloy on the high-speed rotating copper tube after extracting a high vacuum. Roll on, allowing the liquid to cool rapidly to form amorphous strips instantly. The belt swing machine needs to draw 7×10 -3 Pa. The speed of the copper roll needs to be controlled at 3500 rpm. The pressure difference between the quartz tube and the furnace body needs to be controlled at 0.3Pa to obtain Al ...

Embodiment 3

[0042] Weigh pure aluminum, pure titanium, pure copper and pure palladium, put them into an argon smelting furnace, put high-purity argon protective atmosphere into the high-purity argon gas protective atmosphere after the molecular pump pumps high vacuum, and smelt 4 times to make the internal composition of the alloy uniform and obtain Al 80 Cu 5 Ti 10 PD 5 Alloy ingots, then take out the alloy ingots and crush them, take the fragments and ultrasonically clean them with anhydrous ethanol, place them in a clean quartz tube, place them in a belt throwing machine, and spray the melted liquid alloy on the high-speed rotating copper tube after extracting a high vacuum. Roll on, allowing the liquid to cool rapidly to form amorphous strips instantly. The belt swing machine needs to draw 7×10 -3 Pa. The speed of the copper roll needs to be controlled at 4000 rpm. The pressure difference between the quartz tube and the furnace body needs to be controlled at 0.3Pa to obtain Al 8...

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Abstract

The invention discloses a nano-porous hydrogen production catalyst and a preparation method thereof. The preparation method comprises the following steps: preparing an amorphous alloy strip from the following components in percentage by mass: 50-80% of pure Al, 5-20% of pure Cu, 10-20% of pure Ti and 10-20% of pure Pd; and carrying out alloy removing on the prepared amorphous alloy strip twice sequentially in sodium hydroxide and sulfuric acid to obtain the nano-porous Al-Pd-Cu-Ti material, wherein the pore size and the strip size are both in the nanoscale, the nano-porous Al-Pd-Cu-Ti materialhas large specific surface area and more catalytic active sites, the water electrolysis catalytic hydrogen production capacity of the nano-porous Al-Pd-Cu-Ti material is similar to the commercial platinum-carbon electrode, and the operation is easy.

Description

technical field [0001] The invention relates to a hydrogen-producing catalyst material used in an electrolyzed water system, and more specifically relates to a nanoporous hydrogen-producing catalyst and a preparation method thereof. Background technique [0002] In recent years, with the massive exploitation of fossil fuels, the reserves of fossil fuels on the earth are decreasing day by day. The combustion of fossil fuels will produce a large amount of greenhouse gases, leading to the intensification of the global greenhouse effect, and then causing a series of ecological and environmental problems. With the increasingly severe situation, hydrogen energy has received more and more attention in the field of new energy due to its high conversion efficiency and clean and pollution-free. However, the activity and cost of anode catalysts have restricted the large-scale application of direct fuel cells. Pt and Pt-based alloys are the most excellent hydrogen production catalysts...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B11/08C22C3/00C22C5/04C22C32/00C22C1/08
CPCC22C1/08C22C3/00C22C5/04C22C32/0089C25B1/04C25B11/097Y02E60/36
Inventor 朱胜利蒋睿崔振铎杨贤金
Owner TIANJIN UNIV
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