Sodium borohydride catalytic hydrolysis process and reactor of generating hydrogen

A technology of sodium borohydride and catalytic hydrolysis, applied in the production of hydrogen and other directions, can solve the problem of low catalytic activity, and achieve the effects of high hydrogen purity, safe use, and no deactivation problem.

Inactive Publication Date: 2003-11-26
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned hydrogen generation system uses a single metal as a catalyst, and the catalytic activity is low

Method used

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  • Sodium borohydride catalytic hydrolysis process and reactor of generating hydrogen
  • Sodium borohydride catalytic hydrolysis process and reactor of generating hydrogen

Examples

Experimental program
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Effect test

example 1

[0019] In a 500ml reactor with a mechanical stirrer, a dumbbell-shaped double-chamber connected tube vapor-liquid circulation heat exchanger with a 50ml evaporation chamber and a 100ml condensation chamber is installed. 30ml of ethanol is housed in the double-chamber connected tube vapor-liquid circulation heat exchanger. Add 1.6g CoCl to the reactor 2 .6H 2 O, 0.92gFeCl 3 .6H 2 O and 20ml of water. At a stirring speed of 500 rev / min, continuously add an aqueous solution containing 20% ​​(mass) sodium borohydride and 10% (mass) sodium hydroxide with a liquid feed pump at a speed of 3 g / min, and measure with a mass flow indicator The rate at which hydrogen gas is produced. A total of 90 g of an aqueous solution containing 20% ​​(mass) sodium borohydride and 10% (mass) sodium hydroxide was added within 30 minutes. The hydrolysis is complete immediately after the sodium borohydride solution is added to the reactor. The average rate of hydrogen generation is 1.4 liters / minu...

example 2

[0021] In a 500ml reactor with a mechanical stirrer, a dumbbell-shaped double-chamber connected tube vapor-liquid circulation heat exchanger with a 50ml evaporation chamber and a 100ml condensation chamber is installed. 30ml of ethanol is housed in the double-chamber connected tube vapor-liquid circulation heat exchanger. Add 1.6g CoCl to the reactor 2 .6H 2 O and 20ml of water. At a stirring speed of 500 rev / min, continuously add an aqueous solution containing 20% ​​(mass) sodium borohydride and 10% (mass) sodium hydroxide with a liquid feed pump at a speed of 3 g / min, and measure with a mass flow indicator The rate at which hydrogen gas is produced. A total of 90 g of an aqueous solution containing 20% ​​(mass) sodium borohydride and 10% (mass) sodium hydroxide was added within 30 minutes. After the addition of the sodium borohydride solution was complete, stirring was continued. Sodium borohydride hydrolysis was complete after 62 minutes. The average rate of hydrogen ...

example 3

[0023] In a 500ml reactor with a mechanical stirrer, a dumbbell-shaped double-chamber connected tube vapor-liquid circulation heat exchanger with a 50ml evaporation chamber and a 100ml condensation chamber is installed. 30ml of ethanol is housed in the double-chamber connected tube vapor-liquid circulation heat exchanger. Add 2.72g FeCl to the reactor 3 .6H 2 O and 20ml of water. At a stirring speed of 500 rev / min, continuously add an aqueous solution containing 20% ​​(mass) sodium borohydride and 10% (mass) sodium hydroxide with a liquid feed pump at a speed of 3 g / min, and measure with a mass flow indicator The rate at which hydrogen gas is produced. A total of 90 g of an aqueous solution containing 20% ​​(mass) sodium borohydride and 10% (mass) sodium hydroxide was added within 30 minutes. After the addition of the sodium borohydride solution was complete, stirring was continued. Sodium borohydride hydrolysis was complete after 150 minutes. The average rate of hydroge...

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Abstract

The present invention belongs to hydrogen generating technology. Water solution of sodium borohydride in 5-40 wt% concentration and water solution of sodium hydroxide in 0.1-20 wt% concentration andmade to react inside a reactor in the presence of catalyst to produce hydrogen with the heat produced in reaction being removed timely. The present invention features that the catalyst is non-crystalline composite metal alloy produced with composite metal ions in the hydrolysis of sodium borohydride. The reactor consists of casing, stirrer, feeding pipe and gas exhaust port and features its double-chamber steam-liquid circular flow heat exchanger comprising an evaporating chamber inside the reactor casing, a condensating chamber outside the casing and communicating tube in between. The present invention has the advantages of fast removal of reaction heat, use safety, high hydrogen purity, and circular use and no deactivation of catalyst.

Description

technical field [0001] The invention relates to a method and a reactor for generating hydrogen by catalytic hydrolysis of sodium borohydride. It belongs to hydrogen generation technology. Background technique [0002] The hydrogen-oxygen fuel cell is a power generation device that uses the chemical reaction of hydrogen and oxygen to generate electricity. Its final product is water, which has the characteristics of cleanness, no pollution, low noise, high reliability, and adaptability to different power requirements. It can be used to drive Cars, motorcycles and bicycles etc. When a hydrogen-oxygen fuel cell is working, it needs to continuously supply hydrogen to the anode and oxygen to the cathode. The required oxygen can be obtained directly from the air, and the supply technology of hydrogen has become a bottleneck problem in the practical application of fuel cells. [0003] At present, there are four main ways to supply hydrogen for fuel ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/04C01B3/06C01B3/08
CPCY02E60/364Y02E60/36
Inventor 王亚权
Owner TIANJIN UNIV
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