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Preparation method of composite hydrogen absorption material

A hydrogen-absorbing material and alloy technology, applied in the direction of reversible hydrogen absorption, chemical instruments and methods, hydrogen, etc., can solve the problems of low hydrogen absorption capacity, poor hydrogen absorption performance, etc., to increase hydrogen absorption capacity, improve hydrogen absorption performance, The effect of effective hydrogen absorption

Inactive Publication Date: 2018-10-02
FOSHAN TENGLI NEW ENERGY TECH CO LTD
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Problems solved by technology

[0004] Technical problem to be solved by the present invention: Aiming at the problems of low hydrogen absorption capacity and poor hydrogen absorption performance of existing hydrogen absorption materials, a preparation method of composite hydrogen absorption materials is provided

Method used

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  • Preparation method of composite hydrogen absorption material

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Embodiment Construction

[0020] Take 60~70g of magnesium aluminum alloy, 30~40g of microcrystalline carbon, 12~15g of sodium tetrachloropalladate and put them into a ball mill jar, and ball mill at 200~300r / min for 5~6h in a hydrogen atmosphere of 1~2MPa, and the ball milling is finished After obtaining alloy carbon powder, take 20~40mmol polyvinyl alcohol and add it to N,N-dimethylformamide whose mass is 30~60 times, stir at 80~90°C until the polyvinyl alcohol is completely dissolved, then add 20 ~40mmol of N,N-carbonyldiimidazole, stirred and reacted at 200~300r / min for 3~4h under nitrogen atmosphere, added 20~48mmol of propargylamine after the reaction, and continued to stir for 15~18h to obtain the reaction solution. Add the mass fraction of 75% ethanol solution and let it stand for precipitation until no precipitation occurs, filter the filter residue, wash the filter residue with absolute ethanol 2~3 times, put it in a drying oven, and dry it at 80~90℃ for 24~30h to obtain the modified product. ...

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Abstract

The invention relates to a preparation method of a composite hydrogen absorption material and belongs to the technical field of energy saving and environmental protection. Crystalline carbon is takenas a grinding medium, when a magnesium alloy and carbon granules are extruded under collision, the carbon granules can be embedded into the magnesium alloy, magnesium alloy granules are peeled, refined carbon granules adhere to the surfaces of magnalium granules to disperse the alloy granules, cold welding due to collision between the alloy granules is hindered, fresh surface of magnesium is exposed continuously by ball milling, the surface energy is higher than that of magnesium powder without ball milling, hydrogen molecules are adsorbed and dissociated more easily by magnesium, higher energy is produced at effective collision moment, activation energy needed by H atoms for entering a magnesium lattice is provided, then H supports palladium and compounded with modified polyvinyl alcohol,H2 can be diffused to catalyst surface rapidly and converted into free H radicals, the free H radicals are subjected to addition with acetylene linkage under synergy of palladium, so that effective hydrogen absorption is realized, hydrogen absorption capacity is increased, and hydrogen absorption performance of the material is improved.

Description

technical field [0001] The invention relates to a preparation method of a composite hydrogen absorbing material, belonging to the technical field of energy saving and environmental protection. Background technique [0002] Due to the increasing depletion of traditional fossil energy such as coal, oil, and natural gas, as well as the environmental pollution caused by combustion, people are forced to actively seek new renewable green energy that can replace traditional energy, such as: wind energy, solar energy, biomass, hydrogen, etc. can wait. Among them, hydrogen energy has a high combustion calorific value (142MJ kg-1) due to its abundant reserves in the universe, which is about 3 times that of gasoline, 3.9 times that of alcohol, and 4.5 times that of coke, and the combustion product is water. There are obvious advantages such as environmental pollution problems, which have attracted great attention from people. Among them, how to transport and store hydrogen safely, ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/00B22F1/00
CPCC01B3/001B22F1/102Y02E60/32
Inventor 刘菊花张桂芳李静
Owner FOSHAN TENGLI NEW ENERGY TECH CO LTD
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