System and method for producing hydrogen by controllably hydrolyzing sodium borohydride/aluminum powder mixed solid fuel

A technology of solid fuel and sodium borohydride, which is applied in the field of hydrogen storage and hydrogen production, can solve the problems of low hydrogen production efficiency and high cost of hydrogen production, and achieve the effects of high safety, easy operation and high hydrogen storage density

Inactive Publication Date: 2011-10-12
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a sodium borohydride / aluminum powder mixed solid fuel controllable hydrolysis hydrogen production system and hydrogen production method suitable for mobile hydrogen sources, which can solve the problems of low hydrogen production efficiency and hydrogen production cost in the prior art Advanced issues, the hydrogen production system and hydrogen production method have technical advantages such as high efficiency, safety and low hydrogen production cost, and can provide mobile hydrogen sources for hydrogen-burning vehicles and various military and civilian mobile and portable power sources

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  • System and method for producing hydrogen by controllably hydrolyzing sodium borohydride/aluminum powder mixed solid fuel
  • System and method for producing hydrogen by controllably hydrolyzing sodium borohydride/aluminum powder mixed solid fuel
  • System and method for producing hydrogen by controllably hydrolyzing sodium borohydride/aluminum powder mixed solid fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] NaBH 4 Hydrogen production performance comparison between +Al mixed solid fuel hydrolysis hydrogen production system and single solid fuel hydrogen production system.

[0029] NaBH 4 + Al mixed solid fuel catalytic hydrolysis hydrogen production system construction:

[0030] (1) Preparation of solid fuel: quantitatively weigh 1g NaBH respectively 4, 0.5g of Al powder (average particle size 200μm) and 0.1g of NaOH, mixed uniformly in a mortar or in a ball mill jar.

[0031] (2) Preparation of liquid fuel: quantitatively weigh 0.15g of anhydrous CoCl 2 , which was dissolved in 2.85 g H 2 O, configure 3g 5wt.% CoCl 2 aqueous solution.

[0032] Single solid fuel catalytic hydrolysis hydrogen production system construction:

[0033] Use the same method to construct NaBH respectively 4 Single solid fuel catalytic hydrolysis system and Al / H 2 O catalytic reaction system.

[0034] Hydrogen production method:

[0035] The configured solid fuel mixture is placed in a c...

Embodiment 2

[0041] Liquid fuel flow rate versus NaBH 4 Effect of +Al mixed solid fuel on the hydrogen production performance of catalytic hydrolysis hydrogen production system.

[0042] NaBH 4 +Al mixed solid fuel catalytic hydrolysis hydrogen production system construction, hydrogen production method and hydrogen production performance test method are the same as in Example 1.

[0043] figure 2 The comparison of the maximum hydrogen production rate and fuel conversion rate of the mixed solid fuel catalytic hydrolysis hydrogen production system under different liquid fuel flow rates is given. When CoCl 2 When the titration rate of the aqueous solution is 0.8 and 2.5g / min, the maximum hydrogen production rate of the system is 2300 and 4450ml / min respectively, and the fuel conversion rate is 89 and 78%; the calculated hydrogen storage capacity of the system is 5.3 and 4.6 wt.%. The test results show that the hydrogen production performance of the mixed solid fuel catalytic hydrolysis ...

Embodiment 3

[0045] Using two non-noble metal salts as catalysts, a mixed solid fuel catalytic hydrolysis hydrogen production system was constructed.

[0046] NaBH 4 + Al mixed solid fuel catalytic hydrolysis hydrogen production system construction:

[0047] (1) Preparation of solid fuel: the solid fuel composition and preparation method are the same as in Example 1.

[0048] (2) Preparation of liquid fuel: quantitatively weigh 0.075g of anhydrous Co(Ac) respectively 2 and 0.075 g anhydrous FeCl 2 , which was dissolved in 2.85 g H 2 O, configure 3g 5wt.%[Co(Ac) 2 +FeCl 2 ] Aqueous solution.

[0049] The hydrogen production method and the hydrogen production performance test method are the same as in Example 1.

[0050] image 3 Given the use of Co(Ac) 2 +FeCl 2 The hydrogen production performance of the hybrid solid fuel catalytic hydrolysis hydrogen production system constructed by two catalysts. The test results show that: when the titration rate of the liquid fuel is 2.0g / min...

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Abstract

The invention relates to a hydrogen storing and producing technology, in particular to a system and method for producing hydrogen by controllably hydrolyzing sodium borohydride/aluminum powder mixed solid fuel. The system for producing hydrogen consists of solid fuel and liquid fuel, wherein the solid fuel is a mixture of sodium borohydride, aluminum powder and alkali; and the liquid fuel is a transition metal saline solution. In the method for producing hydrogen, the liquid fuel is taken as a hydrogen-producing reaction control preparation and is added into the solid fuel in a controlling manner, so that the immediate controllable hydrogen production can be realized according to the requirement. According to the system and method for producing hydrogen by hydrolyzing the mixed solid fuel, which are provided by the invention, the problems that the hydrogen production efficiency is low, the hydrogen production cost is high, and the like in the prior art can be solved; and the system and method have the advantages of high hydrogen production efficiency, favorable reaction controllability, high fuel conversion rate, simplicity and convenience in operation, relatively-low hydrogen production cost, and the like and can provide a moving hydrogen source for hydrogen combustion vehicles and various military and civil mobile and portable power supplies.

Description

technical field [0001] The invention relates to hydrogen storage and hydrogen production technology, in particular to a sodium borohydride / aluminum powder mixed solid fuel controllable hydrolysis hydrogen production system and a hydrogen production method. Background technique [0002] The development of efficient hydrogen storage technology is a key link to promote the large-scale commercial application of hydrogen energy. Compared with high-pressure hydrogen cylinders and cryogenic liquid hydrogen, materials and even solid-state hydrogen storage have significant advantages in terms of operational safety, energy efficiency, and theoretical hydrogen storage density, and are recognized as the most promising hydrogen storage methods. Solid-state hydrogen storage materials can be divided into two categories: reversible and non-reversible hydrogen storage materials according to the hydrogen charging method, and the latter is also called chemical hydride. Unlike reversible hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/08
CPCY02E60/36
Inventor 王平戴洪斌康向东马广璐
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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