A kind of aluminum alloy/borohydride system for hydrogen production and preparation method thereof

A borohydride and aluminum alloy technology, applied in the field of hydrogen production, can solve the problems of increasing the cost of hydrogen production or strong corrosion of the system, and achieve the effects of low corrosion, good hydrolysis performance and low hydrogen production cost

Inactive Publication Date: 2011-12-14
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the hydrolysis of the aluminum / borohydride system must use nano-metal aluminum or a strong base to stimulate the start-up reaction of the system, which virtually increases the cost of hydrogen production or the strong corrosion of the system

Method used

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  • A kind of aluminum alloy/borohydride system for hydrogen production and preparation method thereof
  • A kind of aluminum alloy/borohydride system for hydrogen production and preparation method thereof
  • A kind of aluminum alloy/borohydride system for hydrogen production and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An aluminum alloy / borohydride system for hydrogen production prepared by a combination of ball milling and tableting. Under the protection of argon, the same component of the system was weighed and mixed by different methods to prepare the aluminum alloy / borohydride system.

[0030] System composition 1: Al, 30wt%; NaBH 4 , 50wt%; Li, 5wt%; CoCl 2 , 15wt%;

[0031] Method 1: Al, Li and CoCl 2 Mixing ball milling for 500min, rotating speed 400r / min, ball-to-material ratio 30:1; then mix with NaBH 4 Aluminum alloy / borohydride system made by mixed pressing;

[0032] Method 2: All system components are mixed and ball milled for 500 minutes at a speed of 400 r / min, with a ball-to-material ratio of 30:1; and then pressed into tablets to form an aluminum alloy / borohydride system.

[0033] The system has very good hydrolysis properties in hot water, see figure 1 , the XRD results before and after hydrolysis of the system are shown in figure 2 .

Embodiment 2

[0035] An aluminum alloy / borohydride system for hydrogen production prepared by a combination of ball milling and tableting. Under the protection of argon, the system components were weighed, and the aluminum alloy / borohydride system was prepared by using method 1 in Example 1.

[0036] System composition 2: Al, 20wt%; NaBH 4 , 60wt%; Li, 5wt%; CoCl 2 , 15wt%;

[0037] System composition 3: Al, 60wt%; NaBH 4 , 20wt%; La, 15wt%; Ni, 5wt%;

[0038] System composition 4: Al, 40wt%; NaBH 4 , 40wt%; Li, 10wt%; Ni, 10wt%;

[0039] System composition 5: Al, 50wt%; NaBH 4 , 30wt%; Ca, 15wt%; Co, 5wt%;

[0040]System composition 6: Al, 35wt%; NaBH 4 , 45wt%; Sr, 10wt%; NiCl 2 , 10wt%;

[0041] System component 7: Al, 25wt%; NaBH 4 , 55wt%; Li, 15wt%; Co(NO 3 ) 2 , 5wt%;

[0042] System composition 8: Al, 40wt%; NaBH 4 , 40wt%; Li, 10wt%; CoCl 2 , 10wt%;

[0043] The aluminum alloy is prepared by mechanical ball milling method. Firstly, the components are weighed, and t...

Embodiment 3

[0045] An aluminum alloy / borohydride system for hydrogen production by hydrolysis, prepared by combining ball milling and tableting. Under the protection of argon, the system components were weighed, and the aluminum alloy / borohydride system was prepared by using method 1 in Example 1.

[0046] System composition 9: Al, 30wt%; BH 3 NH 3 , 40wt%; Li, 15wt%; CoCl 2 , 15wt%;

[0047] System composition 10: Al, 60wt%; KBH 4 , 20wt%; Ca, 10wt%; Ni(NO 3 ) 2 , 10wt%;

[0048] System composition 11: Al, 40wt%; LiBH 4 , 30wt%; La, 20wt%; Ni, 10wt%;

[0049] The aluminum alloy is prepared by mechanical ball milling method. Firstly, the components are weighed, and then mechanically ball milled under the protection of argon. The ball milling time is 400min, the speed is 350r / min, and the ball-to-material ratio is 30:1; then the aluminum alloy and borohydride are mixed and pressed into tablets. Aluminum alloy / borohydride system. The system has very good hydrolysis performance in ...

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Abstract

The invention relates to an aluminum alloy / borohydride system for hydrogen production and a preparation method thereof. The system comprises the following components in percentage by weight: 5-95% of aluminum alloy and the balance of borohydride, wherein the aluminum alloy consists of aluminum, an alkaline substance and an activator; the alkaline substance is one or more of lithium metal, calcium metal, lanthanum metal and strontium metal; the activator is one or more of cobalt metal, nickel metal, cobalt salt and nickel salt; and the aluminum content of the aluminum alloy is 30-95wt%, the total content of the alkaline substance is 1-30wt%, and the total content of the activator is 4-40wt%. By adopting the invention, the hydrogen storage value of the hydrogen production system per unit mass can be increased, and the hydrolysis performance of aluminum / borohydride can be improved.

Description

technical field [0001] The invention belongs to the technical field of hydrogen preparation, and in particular relates to an aluminum alloy / borohydride system suitable for hydrogen production and a preparation method. Background technique [0002] The portable hydrogen source system integrating hydrogen production and hydrogen storage is an effective way to solve the hydrogen source for fuel cells. This method mainly stores fuels such as borohydrides and metals in the hydrogen supply system, generates hydrogen through processing, and supplies it to fuel cells, so as to realize hydrogen production and supply at any time, and solve the safety problems during hydrogen storage and transportation. Borohydride (NaBH 4 and BH 3 NH 3 etc.) have the advantages of high hydrogen content, no pollution, mild and controllable reaction, etc., and are widely concerned by researchers at home and abroad. Borohydrides are stable in alkaline aqueous solutions and are hydrolyzed by catalysts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/08C01B3/06
CPCY02E60/36
Inventor 范美强刘姝孙文强王亮亮姚军舒康颍
Owner CHINA JILIANG UNIV
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