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A kind of mg-ni alloy particle whose surface is inlaid with rare earth element ce and preparation method thereof

A technology of alloy particles and rare earth metals, which is applied in the field of metal materials, can solve the problems of slow start-up of hydrolysis reaction, low reaction activity, slow hydrolysis kinetics of hydrogen production, etc., to avoid activation process, high hydrogen production capacity, and improve alloy mass transfer effect of behavior

Active Publication Date: 2022-07-08
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the above-mentioned prior art, the object of the present invention is to provide a kind of Mg-Ni eutectic alloy particle that is used for hydrolyzing the surface of hydrogen production and mosaic Ce, which can improve the low surface reactivity of existing magnesium alloy materials, and the hydrolysis reaction Slow start, slow hydrolysis kinetics of hydrogen production, etc.

Method used

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  • A kind of mg-ni alloy particle whose surface is inlaid with rare earth element ce and preparation method thereof
  • A kind of mg-ni alloy particle whose surface is inlaid with rare earth element ce and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Alloy ingredients:

[0033] Select Ni powder and Mg block, the particle size of Ni powder is 10-30nm, the purity of Ni powder is ≥99.5%, and the mass of Ni powder accounts for 23.5% of the total mass of magnesium and nickel; the purity of Mg block is ≥99.8%, and the mass of Mg block accounts for the total mass of magnesium and nickel. 76.5%, the burning loss of 6% of the total weight of magnesium and nickel added to magnesium;

[0034] (2) Mg-Ni alloying:

[0035] Put the magnesium block into a dried high-purity graphite crucible, and under the protection of the covering agent RJ-2, heat the Mg block to 770 ° C to obtain the Mg metal liquid, press the Ni powder into Ni pieces and put them into the Mg metal liquid, Mechanical stirring for 20 min to obtain a Mg-Ni alloy melt, the alloy melt was heated to 880 °C and then kept for 30 min. During the heat preservation process, the alloy melt was stirred, and after the Ni sheet was completely melted, it was cast into a g...

Embodiment 2

[0043] (1) Alloy ingredients:

[0044] Select Ni powder and Mg block, the particle size of Ni powder is 10-30nm, the purity of Ni powder is ≥99.5%, the mass of Ni powder accounts for 10% of the total mass of magnesium and nickel, the purity of Mg block is ≥99.8%, and the mass of Mg block accounts for the total mass of magnesium and nickel. 90%, the burning loss of 2% of the total weight of magnesium and nickel added to magnesium;

[0045] (2) Mg-Ni alloying:

[0046] Put the magnesium block into a dried high-purity graphite crucible, and under the protection of the covering agent RJ-2, heat the Mg block to 750 ° C to obtain Mg molten metal, and press the Ni powder into Ni pieces and put them into the Mg molten metal. Mechanical stirring for 30min to obtain Mg-Ni alloy melt, the alloy melt was heated to 850°C and then kept for 30min, the alloy melt was stirred during the heat preservation process, and after the Ni sheet was completely melted, it was cast into a graphite mold p...

Embodiment 3

[0052] (1) Alloy ingredients:

[0053] Select Ni powder and Mg block, the particle size of Ni powder is 10-30nm, the purity of Ni powder is ≥99.5%, the mass of Ni powder accounts for 55% of the total mass of magnesium and nickel, the purity of Mg block is ≥99.8%, and the mass of Mg block accounts for the total mass of magnesium and nickel. 45%, the burning loss of 8% of the total weight of magnesium and nickel added to magnesium;

[0054] (2) Mg-Ni alloying:

[0055] Put the magnesium block into a dried high-purity graphite crucible, and under the protection of the covering agent RJ-2, heat the Mg block to 790 ° C to obtain the Mg metal liquid, and press the Ni powder into the Ni sheet and put it into the Mg metal liquid, Mechanically stirred for 10 minutes to obtain a Mg-Ni alloy melt. The alloy melt was heated to 900 °C and then kept for 30 minutes. During the heat preservation process, the alloy melt was stirred. After the Ni sheet was completely melted, it was cast into a...

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Abstract

A high-reactivity Mg-Ni alloy particle for embedding Ce on the surface of hydrogen production by hydrolysis and a preparation method thereof. The expression of the alloy particle is Ce@Mg-xNi, that is, the rare earth element Ce particle is embedded on the surface of the Mg-Ni alloy particle. The preparation method of the alloy particles comprises the following steps: (1) selecting metal Mg blocks and Ni powders; (2) mixing the Ni sheets made by pressing the Mg blocks and Ni powders evenly in a high temperature molten state, and cooling to obtain Mg-Ni alloys (3) The obtained Mg-Ni alloy ingot is cut into small pieces, and then pressed into Mg-Ni alloy chips by a tablet press, and the chips are placed in a ball milling tank and ball-milled under the protection of argon gas , to obtain Mg-Ni alloy particles; (4) adding rare earth element Ce to the obtained alloy particles, and performing short-time high-energy ball milling under the protection of argon to obtain Mg-Ni alloy particles inlaid with rare earth element Ce on the surface. The invention can significantly improve the activation characteristics and the initial hydrolysis reaction kinetic characteristics of the magnesium-rich alloy, and consolidate the good modification effect after the structure adjustment.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a Mg-Ni alloy particle whose surface is inlaid with rare earth element Ce for hydrogen production by hydrolysis. Background technique [0002] Among the many discovered new energy sources such as wind energy, tidal energy, hydro energy, solar energy, etc., hydrogen energy has attracted more and more attention due to its significant advantages such as high energy storage density, recyclability and zero emission, and vigorously promote hydrogen energy. , the establishment of "hydrogen economy" is the development trend of future energy. [0003] The premise of large-scale utilization of hydrogen energy is to solve the three problems of hydrogen preparation, storage and utilization. At present, the development of hydrogen storage is lagging behind, which has become the main obstacle to the promotion and utilization of hydrogen energy. In addition, hydrogen can be obtained b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00B22F9/04C22C19/03C22C23/00C22C30/00C01B3/08
CPCB22F1/0003B22F9/04C22C19/03C22C19/007C22C23/00C22C30/00C01B3/08B22F2009/043Y02P20/133
Inventor 柳翊石磊左寒松张晶安俊超金文中曹永青
Owner LUOYANG INST OF SCI & TECH
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