Al-BiCl3-Li3AlH6 aluminum-based composite hydrogen production material and preparation method thereof
An aluminum-based composite and aluminum powder technology, which is applied in the field of Al-BiCl3-Li3AlH6 aluminum-based composite hydrogen production materials and its preparation, can solve the problems of high production cost, large amount of hydride addition, and easy combustion, etc., and achieve a high reaction rate Faster, improved hydrogen production performance, and reduced dosage
Inactive Publication Date: 2015-09-30
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology
But this material has the following problems: 1. The Al content of the material is lower than 80%, the amount of hydride added is large, and the preparation cost is high
2. The reaction between materials and water is prone to combustion
Method used
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Embodiment
[0024] Under the protection of argon gas, into the ball mill tank, according to the ball-to-material ratio of 30:1, 90g grinding balls and 3g of raw materials are charged. The raw materials consist of 2.4g Al and 0.15g BiCl. 3 , 0.45g Li 3 AlH 6 ; The ball milling speed is set to 250r / min, the ball milling time is 5h, and Al-BiCl can be prepared 3 -Li 3 AlH 6 Aluminum-based composite hydrogen production material.
[0025] The prepared different aluminum-based composite materials were reacted with water at 25°C at 1 g (sample): 0.1L (water), that is, about 0.1 g of aluminum-based composite materials were weighed, and 10 mL of water was added to determine their hydrogen production performance.
[0026] Compare the experimental results with pure aluminum powder and Al-BiCl prepared using the same preparation method 3 Aluminum matrix composites and Al-Li 3 AlH 6 Comparative analysis of aluminum-based composite materials, see some results figure 1 , figure 2 And Table 1.
[0027] Table 1...
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The invention discloses an Al-BiCl3-Li3AlH6 aluminum-based composite hydrogen production material and a preparation method thereof. The material is formed by ball milling of powdered aluminum and an additive, and the additive is formed by mixing BiCl3 and Li3AlH6. The material comprises, by weight, 50%-95% of powdered aluminum and 5%-50% of additive. During preparation, the needed powdered aluminum, BiCl3 and Li3AlH6 are weighed in proportion to be added into a ball milling tank, then the powdered aluminum, BiCl3 and Li3AlH6 are added to be subjected to ball milling at the ratio of grinding media to materials of 20-120:1, sealing is conducted, and the tank is filled with argon to be protected; the ball milling tank is placed into a ball grinding mill to be subjected to ball milling, the ball milling rotating speed is set to be 100-500 r / min, the ball milling time is 1-10 hours, and accordingly the Al-BiCl3-Li3AlH6 aluminum-based composite hydrogen production material can be obtained. By testing, the composite hydrogen production material has the advantages of being good in hydrogen production performance, low in cost, simple in technology and the like.
Description
Technical field [0001] The invention belongs to the technical field of hydrogen preparation, and specifically is an Al-BiCl 3 -Li 3 AlH 6 Aluminum-based composite hydrogen production material and preparation method thereof. Background technique [0002] Aluminum-based hydrogen production materials have the advantages of high energy density, easy storage, low cost of raw materials, easy availability of raw materials, environmentally friendly aluminum-water reaction products, and recyclable use. They are widely used in energy storage, peak shifting and valley filling, and mobile hydrogen production. Application prospects. However, during the reaction between aluminum and water, a dense oxide film is formed on the surface, which hinders the continuous progress of the reaction. Therefore, how to break the oxide film on the aluminum surface has become the key to the aluminum-water hydrogen production technology. [0003] The alkaline solution can effectively break the oxide film on the...
Claims
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IPC IPC(8): C01B3/08
CPCY02E60/36
Inventor 孙立贤邵豫龙徐芬邱树君向翠丽
Owner GUILIN UNIV OF ELECTRONIC TECH