High-capacity organic-inorganic composite hydrogen storage material and preparation method thereof

A technology of inorganic composite and hydrogen storage materials, applied in the production of hydrogen, etc., can solve the problems of low hydrogen storage efficiency, slow hydrogen desorption rate, poor dispersion performance, etc., and achieve high hydrogen storage capacity, favorable release, and hydrogen desorption temperature low effect

Active Publication Date: 2015-11-18
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A technical problem to be solved by the present invention is to provide a high-capacity organic-inorganic composite hydrogen storage material to overcome the defects of poor dispersion performance, easy agglomeration, low hydrogen storage efficiency, and slow hydrogen release rate of existing hydrogen storage materials

Method used

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  • High-capacity organic-inorganic composite hydrogen storage material and preparation method thereof
  • High-capacity organic-inorganic composite hydrogen storage material and preparation method thereof
  • High-capacity organic-inorganic composite hydrogen storage material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035]Weigh 10 g of polyethyleneimine (molecular weight: 10,000) and 10 g of cetyl ammonium bromide, dissolve them in 100 mL of ethanol at a temperature of 80° C., and stir to fully dissolve them. After stirring at constant temperature for 2 hours, add 25 g of ethyl orthosilicate to the reaction solution, and continue to stir at a temperature of 25 ° C for 12 hours; after the above reaction is completed, filter to obtain an organic-inorganic hybrid material;

[0036] Then add stoichiometric ratio of bromoethanol to the obtained organic-inorganic hybrid material, stir and react with potassium carbonate at 80°C for 24 hours, filter the precipitate, wash with water, and dry, and then dissolve the dried polymer in anhydrous dichloromethane Add 1.5 equivalents of methanesulfonyl chloride and triethylamine to react for 2 hours, then spin dry the solvent, extract with dichloromethane, dry, then add guanidine and triethylamine, react overnight at 25°C, filter and wash with water to obt...

Embodiment 2

[0039] Weigh 10 g of polyethyleneimine (molecular weight: 50,000) and 10 g of cetyl ammonium bromide, dissolve them in 100 mL of ethanol at a temperature of 80° C., and stir to fully dissolve them. After stirring at constant temperature for 2 hours, add 25 g of tetraethyl orthosilicate into the reaction solution, and continue to stir at 105°C for 12 hours; after the above reaction is completed, filter to obtain an organic-inorganic hybrid material;

[0040] Then add stoichiometric ratio of bromoethanol to the obtained organic-inorganic hybrid material, stir and react with potassium carbonate at 80°C for 24 hours, filter the precipitate, wash with water, and dry, and then dissolve the dried polymer in anhydrous dichloromethane Add 1.5 equivalents of methanesulfonyl chloride and triethylamine to react for 2 hours, then spin dry the solvent, extract with dichloromethane, dry, then add guanidine and triethylamine, react overnight at 25°C, filter and wash with water to obtain the am...

Embodiment 3

[0045] Weigh 10 g of PAH and 10 g of cetyl ammonium bromide, dissolve them in 100 mL of ethanol at a temperature of 80° C., and stir to fully dissolve them. After stirring at constant temperature for 2 hours, add 25 g of ethyl orthosilicate to the reaction solution, and continue to stir at a temperature of 110 ° C for 12 hours; after the above reaction is completed, filter to obtain an organic-inorganic hybrid material;

[0046] Then add stoichiometric ratio of bromoethanol to the obtained organic-inorganic hybrid material, stir and react with potassium carbonate at 80°C for 24 hours, filter the precipitate, wash with water, and dry, and then dissolve the dried polymer in anhydrous dichloromethane Add 1.5 equivalents of methanesulfonyl chloride and triethylamine to react for 2 hours, then spin dry the solvent, extract with dichloromethane, dry, then add guanidine and triethylamine, react overnight at 25°C, filter and wash with water to obtain the amino group Functionalized pol...

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Abstract

The invention discloses a high-capacity organic-inorganic composite hydrogen storage material. The organic-inorganic composite hydrogen storage material comprises an inorganic porous material and organic materials uniformly dispersed in pores of the inorganic porous material, wherein the inorganic porous material adopts porous silicon dioxide or aluminum oxide, the aperture is 0.5-20 nm, and the specific surface area is 300-500 m<2>/g; the organic materials comprise polymers serving as main chains and borane ammonia derivatives, and the borane ammonia derivatives are prepared as follows: side chains and/or end groups of the polymers are subjected to amination by polyamine compounds and grafted to the side chains and/or ends of the polymers through reaction with a borohydride. The invention further discloses a preparation method of the high-capacity organic-inorganic composite hydrogen storage material. The high-capacity organic-inorganic composite hydrogen storage material prepared with the method has the following advantages: mutual agglomeration of the polymers can be inhibited effectively, the hydrogen storage and release efficiency is high, little environmental pollution is produced, the material can be regenerated and recycled, and the cost is saved.

Description

technical field [0001] The invention relates to the fields of polymer materials, hydrogen storage materials and energy, in particular to a high-capacity organic-inorganic composite hydrogen storage material and a preparation method thereof. Background technique [0002] Hydrogen has abundant reserves, high combustion efficiency, and no pollution. It is known as a green energy carrier in the 21st century. The development and utilization of hydrogen energy involves four key technologies of hydrogen preparation, storage, transportation and application. However, since hydrogen is the lightest of all elements, it is gaseous at normal temperature and pressure, and its density is only 0.0899kg / m 3 , is one ten-thousandth of water, so the high-density storage of hydrogen has always been a world-class problem. Efficient, safe and economical hydrogen storage technology has become a bottleneck for the practical and large-scale utilization of hydrogen energy, limiting the utilization ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/02C08L79/02C08K7/26C08K7/24C08K3/36C08K3/22C01B3/02
Inventor 程宇婷方章建郑兴才卓之久
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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