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Aluminium-based compound capable of having hydrolysis reaction under neutral and normal temperature conditions to produce hydrogen and preparation method thereof

An aluminum-based composite, hydrolysis hydrogen production technology, applied in hydrogen production and other directions, to achieve the effect of improving hydrogen yield, accelerating aluminum hydrolysis reaction rate, and no environmental pollution

Inactive Publication Date: 2012-10-31
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no effective method to continuously and completely react metal aluminum with neutral water. How to make reasonable use of cheap metal aluminum and water to continuously react and low-cost large-scale hydrogen production has become an urgent problem to be solved.

Method used

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  • Aluminium-based compound capable of having hydrolysis reaction under neutral and normal temperature conditions to produce hydrogen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Bismuth powder and tin powder are evenly mixed in a mass ratio of 1:1, and pressed into a cylindrical shape in a steel mold. Put the cylindrical bismuth powder-tin powder mixture into a vacuum electric arc furnace for smelting four times, and then spin it on a vacuum strip machine to obtain bismuth-tin amorphous or nanocrystalline alloy thin strips. 2~3um metal pure aluminum powder and bismuth-tin amorphous or nanocrystalline alloy thin strips are put into a stainless steel ball mill tank at a mass ratio of 100:20, and the aluminum matrix composite is obtained after ball milling under the protection of a high-purity Ar atmosphere for 16 hours. thing. Add the aluminum-based composite to pure water at 30°C, and continue to react with water. The reaction is completed within 10 minutes, and the actual hydrogen production rate of the aluminum powder is as high as 93.4%. The product is aluminum oxyhydroxide that can be recycled, and the aluminum-based composite The XRD patte...

Embodiment 2

[0015] Bismuth powder and indium powder are uniformly mixed at a mass ratio of 3:7, and pressed into a cylindrical shape in a steel mold. The cylindrical bismuth powder-indium powder mixture is smelted in a vacuum electric arc furnace for 4 times, and then stripped on a vacuum strip machine to obtain bismuth-indium amorphous or nanocrystalline alloy thin strips. 2~3um metal pure aluminum powder and bismuth-indium amorphous or nanocrystalline alloy thin strips are put into a stainless steel ball mill tank at a mass ratio of 100:10, and the aluminum matrix composite is obtained after ball milling under the protection of a high-purity Ar atmosphere for 24 hours. things. Add the aluminum-based composite to pure water at 20°C, and continue to react with the water. The reaction is completed within 20 minutes. The actual hydrogen production rate of the aluminum powder is about 78%, and the product is aluminum oxyhydroxide that can be recycled.

Embodiment 3

[0017] Bismuth powder, tin powder and zinc powder are uniformly mixed in a mass ratio of 5:4:1, and pressed into a cylindrical shape in a steel mold. The cylindrical bismuth-tin-zinc powder mixture is smelted in a vacuum electric arc furnace for 4 times, and then stripped on a vacuum strip machine to obtain bismuth-tin-zinc amorphous or nanocrystalline alloy thin strips. 4~6um metal pure aluminum powder and bismuth-tin-zinc amorphous or nanocrystalline alloy thin strips are put into a stainless steel ball mill tank at a mass ratio of 100:5, and aluminum is obtained after ball milling under the protection of a high-purity Ar atmosphere for 16 hours. base complex. Add the aluminum-based composite to pure water at 20°C, and continue to react with the water. The reaction is completed within 15 minutes. The actual hydrogen production rate of the aluminum powder is about 83%, and the product is aluminum oxyhydroxide that can be recycled.

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Abstract

The invention relates to an aluminium-based compound capable of having hydrolysis reaction under neutral and normal temperature conditions to produce hydrogen and a preparation method thereof. The aluminium-based compound consists of pure aluminium powder and amorphous or nano-crystal alloy thin tape which prevents the aluminium powder from being bonded in the ball milling process, produces denseoxide film in water and plays catalytic action. The ratio by mass of the pure aluminium powder to the amorphous or nano-crystal alloy thin tape is 100:Y (Y=0.1-20), and the particle size of the pure aluminium powder is in a range from 0.01um to 10um. The preparation method of the aluminium-based compound capable of having hydrolysis reaction to produce hydrogen comprises the following steps of: mixing the materials, and conducting high-energy ball milling to obtain the aluminium-based compound. The aluminium-based compound can quickly and continuously produce hydrogen at normal temperature after being put in pure water, and the hydrogen yield rate is from 70% to 98%. The invention has the advantages of simple technique and low making cost. The aluminium-based compound can produce hydrogenat normal temperature and under normal pressure. Aluminium hydrolysis reaction speed is raised, the hydrogen yield rate is improved, and reaction products are chemically neutral and do not pollute environment. The aluminium-based compound is suitable for large-scale production. The invention provides a novel portable hydrogen producing method which can be directly used for providing the fuel cells of various portable devices with a hydrogen source.

Description

technical field [0001] The invention relates to an aluminum-based composite for hydrogen production by hydrolysis at neutral and normal temperature and a preparation method thereof, belonging to the technical field of functional metal composite materials and hydrogen production. Background technique [0002] Hydrogen energy has the advantages of wide sources, clean and environmentally friendly, storable and renewable, and is regarded as the clean energy with the most development potential in the 21st century. Although hydrogen is one of the most abundant elements in nature, natural hydrogen is rarely found on the ground, so it can only be produced artificially. The usual ways to produce hydrogen are: decomposing hydrogen from abundant water; extracting hydrogen from a large number of hydrocarbons; producing hydrogen from a wide range of biological resources; or using microorganisms to produce hydrogen and so on. Corresponding hydrogen production technologies include: fossil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/08
CPCY02E60/36
Inventor 肖学山易贝贝林根文赵祥娟马正欢
Owner SHANGHAI UNIV
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