Foamed aluminum-based hydrogen production material and preparation method thereof

A technology of foamed aluminum and titanium hydride is applied in the field of foamed aluminum-based hydrogen production materials and their preparation, which can solve the problems of expensive production equipment, complicated processes, low hydrogen production rate, etc. The effect of increasing the reaction rate

Active Publication Date: 2017-07-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In 2012, Hu Xiaoyang et al prepared a water-reactive Al-Sn alloy foil (Hydrogen generation through rolling using Al-Sn alloy) by cold rolling method, but the method was complicated and the production equipment was expensive. In 2014, Chen Kai et al. A novel method to prepare Al-Ga alloy with intergranular penetrating is used to prepare Al-Ga alloy with intergranular penetrating by infiltrating gallium into the aluminum alloy grain boundary. This process needs to be carried out under a low-temperature protective atmosphere, and the hydrogen production rate is low.

Method used

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  • Foamed aluminum-based hydrogen production material and preparation method thereof
  • Foamed aluminum-based hydrogen production material and preparation method thereof
  • Foamed aluminum-based hydrogen production material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Step 1: Place aluminum with a mass fraction of 84.1% in an electric furnace at 750°C. After it is completely melted, cool down to 715°C, and immediately press block magnesium with a mass fraction of 2% into the melt to prevent it from Surface combustion, considering the burning loss of magnesium at high temperature, the amount of magnesium added can be 1.1 times of the theoretical amount added;

[0025] Step 2: Add block-shaped gallium, 7% tin, and 1% indium in sequence to the aluminum alloy melt, stir evenly, remove residues generated on the surface of the melt, and stand at 710°C for 15 minutes. Stir for 5 minutes, so that the metal elements are fully alloyed and can be evenly distributed in the molten aluminum;

[0026] Step 3: Cool down to 685°C, add magnesium powder with a mass fraction of 0.9% to the aluminum alloy melt obtained in Step 2 and stir, then add titanium hydride particles with a mass fraction of 1% and a particle size of 20 μm, and stir rapidly after a...

Embodiment 2

[0032] Step 1: Place aluminum with a mass fraction of 82% in an electric furnace at 750°C. After it is completely melted, cool down to 710°C, and immediately press 3% block magnesium into the melt to prevent its Burning on the surface, considering the burning loss of magnesium at high temperature, the amount of magnesium added can be 1.1 times of the theoretical amount added;

[0033] Step 2: Add block-shaped gallium, 5% tin, and 2% bismuth in sequence to the aluminum alloy melt, stir evenly, remove residues generated on the surface of the melt, and stand at 730°C for 20 minutes. Stir for 5 minutes, so that the metal elements are fully alloyed and can be evenly distributed in the molten aluminum;

[0034] Step 3: Cool down to 690°C, add magnesium powder with a mass fraction of 2% to the aluminum alloy melt obtained in Step 2 and stir, then add titanium hydride particles with a mass fraction of 3% and a particle size of 20 μm, and stir rapidly after adding The distribution is ...

Embodiment 3

[0036] Step 1: Place aluminum with a mass fraction of 78.7% in an electric furnace at 750°C. After it is completely melted, cool down to 730°C, and immediately press 10% mass fraction of magnesium into the melt to prevent its Burning on the surface, considering the burning loss of magnesium at high temperature, the amount of magnesium added can be 1.1 times of the theoretical amount added;

[0037] Step 2: Add block-shaped gallium with a mass fraction of 2%, 3.5% tin, and 0.5% 47-degree low-melting point alloy to the aluminum alloy melt in sequence, stir evenly, remove the residue generated on the surface of the melt, and heat it at 720°C Stand still for 10 minutes, stir for 5 minutes, so that the metal elements are fully alloyed and can be evenly distributed in the molten aluminum;

[0038] Step 3: Cool down to 688°C, add calcium powder with a mass fraction of 3.8% to the aluminum alloy melt obtained in Step 2 and stir, then add titanium hydride particles with a mass fraction...

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Abstract

The invention discloses a foamed aluminum-based hydrogen production material and a preparation method of the foamed aluminum-based hydrogen production material. The preparation method comprises the steps that aluminum is cooled after being completely molten, magnesium is immediately pressed in the molten body, gallium, stannum and any one of indium, bismuth and 47-degree low-melting-point alloy are sequentially added into the aluminum alloy, the mixture is stirred to be uniform, residue on the surface of molten liquid is removed, standing is carried out, metal elements are sufficiently alloyed and evenly distributed in aluminum liquid, finally, cooling is carried out, tackifier is added into the aluminum alloy molten body obtained in the second step and stirred, titanium hydride particles are added and evenly distributed, standing is carried out under certain pressure, rapid cooling is carried out, and therefore foamed aluminum alloy can be obtained. The prepared foamed aluminum alloy can improve the reaction activity and reaction speed of aluminum liquid, aluminum alloy and water are reacted completely, and the method has the advantages of being high in hydrogen production efficiency and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a foamed aluminum-based hydrogen production material and a preparation method thereof. Background technique [0002] Hydrogen has a heat of combustion three times higher than hydrocarbon fuels, and the product of its combustion in air is water. However, due to its low density and high activity, there are many problems in actual transportation and storage. At present, this problem has been successfully solved by in-situ hydrogen production by reacting metal and water. The metals used include hydrogen production materials based on Mg, Al, and Zn. Among them, because aluminum is rich in sources, cheap, and has the highest hydrogen production, and its reaction products are aluminum oxides and hydroxides, which are convenient for recycling. [0003] The reason why pure aluminum does not react even in boiling water is that there is a dense oxide film on its surface, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/08
CPCC22C1/08C22C21/003C22C1/083
Inventor 朱建锋杨波姜涛侯小江苟永妮呼丹姜志超
Owner SHAANXI UNIV OF SCI & TECH
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