Preparation method of magnesium-aluminum alloy hydrogen-production material

A magnesium-aluminum alloy and magnesium-aluminum technology, which is applied in the field of magnesium-aluminum alloy hydrogen production materials, can solve the problems of reducing the theoretical hydrogen production of aluminum-based alloys, reducing the practical application prospects, and slow aluminum hydrolysis rate, so as to improve the hydrolysis performance , easy operation, low material requirements

Inactive Publication Date: 2017-09-22
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention patent (a hydrogen-producing Al-based alloy composite material and its preparation and use method, CN 1013583108) uses aluminum-tin and other alloys and carbon nanomaterials to be composited at high temperature. This system has good hydrogen production efficiency in neutral aqueous solution. This method needs to add a large amount of dopant carbon and tin, which reduces the theoretical hydrogen production of aluminum-based alloys
The disadvantage of this method is that the hydrolysis product Ca(OH) of metallic calcium 2 Slightly soluble in water, resulting in a slow rate of aluminum hydrolysis
Aluminum-calcium alloys need to be further crushed, salt-doped, and then ball-milled, which reduces the practical application prospects of this method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Composition design of a magnesium-aluminum alloy material for hydrogen production:

[0020] 1) Magnesium, 0.48g; Aluminum, 2.7g; Sodium bismuthate, 0.3g;

[0021] 2) Magnesium, 0.48g; Aluminum, 2.7g; Sodium stannate, 0.3g;

[0022] 3) Magnesium, 0.48g; Aluminum, 2.7g; Sodium ferrite, 0.3g;

[0023] 4) Magnesium, 0.48g; Aluminum, 2.7g; Sodium germanate, 0.3g;

[0024] 5) Magnesium, 0.48g; Aluminum, 2.7g; Sodium metaaluminate, 0.3g;

[0025] A preparation method of a magnesium-aluminum alloy material for hydrogen production comprises:

[0026] 1) Weigh a certain mass of magnesium, aluminum metal powder and weak acid salt, and mechanically ball mill for 10 hours in an argon atmosphere;

[0027] 2) pressing the product of step 1) into blocks, the pressure range is 10 tons;

[0028] 3) Put the product of step 2) into an airtight container and let it stand at 500° C. for 10 h in an argon atmosphere; then cool and pulverize to obtain a magnesium-aluminum alloy hydrogen pr...

Embodiment 2

[0031] Composition design of a magnesium-aluminum alloy material for hydrogen production:

[0032] 6) Magnesium, 0.9g; Aluminum, 2.7g; Sodium bismuthate, 0.4g;

[0033] 7) Magnesium, 1.3g; Aluminum, 2.7g; Sodium stannate, 0.4g;

[0034] 8) Magnesium, 2.0g; Aluminum, 2.7g; Potassium ferrite, 0.4g;

[0035] 9) Magnesium, 2.7g; Aluminum, 2.7g; Sodium germanate, 0.4g;

[0036] 10) Magnesium, 0.48g; Aluminum, 2.7g; Sodium metaaluminate, 0.3g;

[0037] A preparation method of a magnesium-aluminum alloy material for hydrogen production comprises:

[0038] 1) Weigh a certain mass of magnesium, aluminum metal powder and weak acid salt, and mechanically ball mill for 20 hours in an argon atmosphere;

[0039] 2) pressing the product of step 1) into blocks, the pressure range is 10 tons;

[0040] 3) Put the product of step 2) into an airtight container and let it stand at 400° C. for 15 hours in an argon atmosphere; then cool and pulverize to obtain a magnesium-aluminum alloy hydroge...

Embodiment 3

[0043] Composition design of a magnesium-aluminum alloy material for hydrogen production:

[0044] 11) Magnesium aluminum alloy (mass ratio of magnesium to aluminum is 0.2), 3g; sodium bismuthate, 0.4g;

[0045] 12) Magnesium aluminum alloy (mass ratio of magnesium to aluminum is 0.4), 3g; sodium stannate, 0.4g;

[0046] 13) Magnesium aluminum alloy (mass ratio of magnesium to aluminum is 0.6), 3g; calcium metaaluminate, 0.4g;

[0047] 14) Magnesium aluminum alloy (mass ratio of magnesium to aluminum is 0.8), 3g; sodium metaaluminate, 0.4g;

[0048] A preparation method of a magnesium-aluminum alloy material for hydrogen production comprises:

[0049] 1) Weigh a certain mass of magnesium, aluminum metal powder and weak acid salt, and mechanically ball mill for 5 hours in an argon atmosphere;

[0050] 2) pressing the product of step 1) into blocks, the pressure range is 10 tons;

[0051] 3) Put the product of step 2) into an airtight container and let it rest at 600° C. for...

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Abstract

The invention relates to a preparation method of a magnesium-aluminum alloy hydrogen-production material. The magnesium-aluminum alloy hydrogen-production material is obtained through mechanical mixing of weak-acid salt, briquetting and high-temperature treatment with magnesium-aluminum metal powder or magnesium-aluminum metal alloy powder as a precursor; the molar ratio of magnesium to aluminum is 0.1-1, and the mass of weak-acid salt is 0.01-20wt% of the mass of magnesium-aluminum alloy; positive ions of the weak-acid salt are one of sodium, potassium, calcium, barium and strontium; negative ions of the weak-acid salt are one of bismuth acid radical, tin acid radical, ferrum acid radical, germanium acid radical, meta-aluminic acid radical and meta-zinc acid radical. The magnesium-aluminum alloy hydrogen-production material is hydrolyzed rapidly in water or neutral water solutions to generate hydrogen and has extremely good application prospects in the field of portable hydrogen production.

Description

technical field [0001] The invention belongs to the field of hydrogen production, and in particular relates to a preparation method of a magnesium-aluminum alloy material for hydrogen production. Background technique [0002] Metal hydrogen production materials, such as magnesium, aluminum, zinc, etc., have the advantages of low price, mild hydrolysis conditions, and large hydrogen production, and are one of the choices for portable hydrogen sources. Conventional metal hydrolysis hydrogen production is usually carried out in acid or alkaline solution, which will bring potential harm to users, and requires corrosion resistance for equipment materials; this virtually limits the application and development of metal hydrogen production materials. [0003] Nowadays, many researchers add other metals such as bismuth, tin, nickel, etc. to form alloy phases, which greatly improves the reactivity of magnesium, aluminum and other metals in neutral water and solutions. The invention p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C01B3/08
CPCY02E60/36C22C1/0416C01B3/08
Inventor 奚诚巧范美强尹天楚邹文珍申屠宏伟陈鑫
Owner CHINA JILIANG UNIV
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