Cage-shaped structure composite hydrogen storage method

A hydrogen storage and cage-type technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of low gas storage density, high temperature required, single hydrogen storage method, etc., and achieve simple hydrogen release process and simple hydrogen storage The effect of mild hydrogen conditions and high hydrogen storage density

Active Publication Date: 2012-05-23
SOUTH CHINA UNIV OF TECH
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  • Abstract
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Problems solved by technology

However, this method cannot combine hydrate hydrogen storage with catalytic hydrogenation organically, and the hydrogen storage method is single
[0010] Although the current catalytic hydrogenation of organic liquids has high conversion efficiency for gas storage, it requires high temperature and long reaction time, which is not suitable for industrial production.
The hydrate hydrogen storage method requires high pressure, slow gas storage speed, low gas storage density, and the gas storage material cannot be recycled, and it is a single gas storage method, which is difficult to promote in the industry. Therefore, the present invention proposes a method based on Cage structure hydrogen storage method, this method has the advantages of fast hydrogen storage, mild gas storage conditions, high gas storage density, and is a hydrogen storage material that can composite hydrogen storage in two ways

Method used

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  • Cage-shaped structure composite hydrogen storage method

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Experimental program
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Effect test

Embodiment 1

[0038]0.5g 1-butenal is dissolved in acetone, the formation mass fraction is the acetone solution of 70% 1-butenal, will be loaded with catalyst TiO 2 The molecular sieves were impregnated in the acetone solution of 1-butenal for 4 days, then taken out and put into the autoclave. Seal the high-pressure reaction kettle, pump out the air in the kettle to make the vacuum degree 0.5MPa, pass the cooling liquid (-5°C, silicone oil) in a constant temperature cold bath, wait for the temperature in the kettle to drop to -5°C, and after it stabilizes, open the hydrogen inlet valve , adjust the pressure in the kettle, adjust the pressure to 2MPa (P 1 ), stop the hydrogen flow, turn on the light source, so that the inside of the high-pressure reactor is in an environment with light and catalyst. After the pressure is stabilized, the pressure is 0.6MPa(P 2 ), the organic hydrogen cage compound is completely generated, the light source is turned off, and the hydrogen storage ends. The h...

Embodiment 2

[0040] 6g 2-hexenoic acid is dissolved in acetone to form an acetone solution whose mass fraction is 90% 2-hexenoic acid, and the catalyst TiO 2 The molecular sieves were impregnated in the acetone solution of 2-hexenoic acid for 3 days, then taken out and put into the autoclave. Seal the high-pressure reaction kettle, pump out the air in the kettle to make the vacuum degree 0.6MPa, and pass the cooling liquid (10°C, silicone oil) in a constant temperature cooling bath. The pressure in the kettle is adjusted to 20MPa (P 1 ), stop the hydrogen flow, turn on the light source, so that the inside of the high-pressure reactor is in an environment with light and catalyst. After the pressure is stabilized, 3MPa(P 2 ), the organic hydrogen cage compound is completely generated, the light source is turned off, and the hydrogen storage ends. Calculate the hydrogen storage capacity according to the formula (1), and the total hydrogen storage capacity is 7.2wt%. Compared with simple o...

Embodiment 3

[0042] 6g 2-pentenol is dissolved in acetone to form an acetone solution with a mass fraction of 90% 2-pentenol, and the loaded catalyst Pt / InVO 4 / TiO 2 The molecular sieves were impregnated in the acetone solution of 2-pentenol for 3 days, then taken out and put into the autoclave. Seal the high-pressure reaction kettle, pump out the air in the kettle to make the vacuum degree 0.8MPa, and pass the cooling liquid (20°C, silicone oil) in a constant temperature cooling bath. The pressure in the kettle is adjusted to 29MPa (P 1 ), stop the hydrogen flow, turn on the light source, so that the inside of the high-pressure reactor is in an environment with light and catalyst. After the pressure is stabilized, 29MPa(P 2 ), the organic hydrogen cage compound is completely generated, the light source is turned off, and the hydrogen storage ends. The hydrogen storage capacity is calculated according to the formula (1), and the total hydrogen storage capacity is 8.6wt%. Compared wit...

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Abstract

The invention discloses a cage-shaped structure composite hydrogen storage method. The invention uses organic matters which contain C-C double bonds and can form hydrogen bonds as hydrogen storage materials, double bonds of the hydrogen storage materials can be broken under the condition of light irradiation and existence of hydrogenation catalysts. Carbon atoms accept hydrogen protons at the broken parts of the double bonds for forming novel single bonds, i.e. the catalytic hydrogenation reaction is carried out. After the organic matter takes the catalytic hydrogenation reaction, cage-shapedcompounds with polyhedral holes can be formed through hydrogen bonds, a plurality of cage-shaped holes are formed in the cage-shaped compounds, and hydrogen gas molecules can enter the holes, i.e. the hydrogen gas molecules are covered in the cage-shaped holes. The invention can use one kind of gas storage materials for simultaneously storing the gas in two modes, in addition, the hydrogen gas stored in the hydrogen cage type hydrates can be easily desorbed, and the invention has the advantages of high gas storage density, safety, convenient transportation and the like.

Description

technical field [0001] The invention relates to hydrogen storage and organic composite hydrogen storage materials, in particular to a composite hydrogen storage method with a cage structure. technical background [0002] Hydrogen is a renewable and clean energy source with a wide range of sources. Its combustion product is water, which is extremely friendly to the environment. It has become the most ideal fuel for fuel cells and hydrogen internal combustion engines. Due to the low density of hydrogen gas, it is easy to explode, so the key technology of hydrogen energy utilization lies in the storage of hydrogen gas. [0003] The development of hydrogen storage materials is the key to solving the technical problems of hydrogen storage in hydrogen energy applications. Due to its relatively low hydrogen storage capacity and high cost, traditional hydrogen storage materials have gradually been unable to meet the growing industrial demand. Hydrogen storage methods can be divide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/00
CPCY02E60/328Y02E60/32
Inventor 郎雪梅樊栓狮陈玉娟王燕鸿
Owner SOUTH CHINA UNIV OF TECH
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