Preparation method of zeolite composite magnesium base hydrogen storage material

A technology of hydrogen storage material and zeolite, which is applied to electrical components, battery electrodes, circuits, etc., can solve the problems of poor hydrogen absorption and desorption kinetic performance, slow hydrogen absorption and desorption speed, etc., and achieve the effects of low cost and simple preparation steps.

Inactive Publication Date: 2016-04-13
雷春生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main technical problem to be solved by the present invention is to provide a method for preparing a zeolite composite magnesium-based hydrogen storage material for the slow hydrogen absorption and desorption speed of Mg and Mg-based hydrogen storage alloys, that is, poor hydrogen absorption and desorption kinetics. The invention is mainly the FeCl 2 Carry out dehydration, grind and sieve, and then stir and mix the dry dimet...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] FeCl 2 Spread it evenly on the surface of the glass dish, place the glass dish under the microwave power of 1200W, dehydrate for 3min, and put the dehydrated FeCl 2 Take it out, place it in a grinding device to grind and sieve, and prepare 120 mesh FeCl 2 , and dried in an oven at 80°C to obtain dry FeCl 2 ; then by mass ratio 1:2, place calcium oxide in dimethylformamide for dehydration treatment for 15min, then remove the lower precipitate by suction filtration to obtain dry dimethylformamide, then by mass ratio 1:20 , the dry FeCl prepared above 2 Dissolved in dimethylformamide, stirred and mixed for 15 minutes, after it was completely dissolved, a mixed solution of ferrous chloride was prepared; then, according to the mass ratio of 1:40, 80 mesh magnesium powder was slowly added to In the ferrous chloride mixed solution, heat it up to 70°C, set the stirring speed to be 800r / min, and stir for 3h. After the stirring reaction is completed, suction filter it and coll...

example 2

[0022] FeCl 2 Evenly spread on the surface of the glass dish, and put the glass dish under the microwave power of 1000W, after dehydration for 2min, the dehydrated FeCl 2 Take it out, place it in a grinding device to grind and sieve, and prepare 80 mesh FeCl 2 , and dried in a 60°C oven to obtain dry FeCl 2 ; Then, according to the mass ratio of 1:2, calcium oxide was placed in dimethylformamide for dehydration treatment for 10min, and then it was suction-filtered to remove the lower precipitate to obtain dry dimethylformamide, followed by mass ratio of 1:20 , the dry FeCl prepared above 2Dissolved in dimethylformamide, stirred and mixed for 10 minutes, after it was completely dissolved, a mixed solution of ferrous chloride was prepared; then, according to the mass ratio of 1:40, 60 mesh magnesium powder was slowly added to In the ferrous chloride mixed solution, heat it up to 60°C, set the stirring speed to 600r / min, and stir for 2 hours. After the stirring reaction is com...

example 3

[0024] FeCl 2 Evenly spread on the surface of the glass dish, and put the glass dish under the microwave power of 1100W, after dehydration for 2min, the dehydrated FeCl 2 Take it out, place it in a grinding device to grind and sieve, and prepare 100 mesh FeCl 2 , and dried in a 70°C oven to obtain dry FeCl 2 ; Then by mass ratio 1:2, calcium oxide is placed in dimethylformamide and dehydrated for 12min, then it is suction filtered to remove the lower layer of precipitation to obtain dry dimethylformamide, then by mass ratio 1:20 , the dry FeCl prepared above 2 Dissolved in dimethylformamide, stirred and mixed for 12min, after it was completely dissolved, a ferrous chloride mixed solution was prepared; then, according to the mass ratio of 1:40, 70 mesh magnesium powder was slowly added to In the ferrous chloride mixed solution, heat it up to 65°C, set the stirring speed to 700r / min, stir and react for 2h, after the stirring reaction is completed, suction filter it and collec...

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PUM

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Abstract

The invention relates to a preparation method of a zeolite composite magnesium base hydrogen storage material, and belongs to the field of preparation of hydrogen storage materials. Firstly, FeCl2 is dehydrated, grinded and sieved; then, dried dimethylformamide is mixed, and is added with magnesium powder for heating, stirring and extracting; filter cakes are collected, and are washed by using the dried dimethylformamide and acetone; then, the washed filter cakes are dried, activated, pressurized, insulated and cooled to room temperautre, and perform ball milling with zeolite molecules in a ball milling machine to prepare zeolite composite Mg2FeH6 powder; and the zeolite composite Mg2FeH6 powder is put in a hydrogen activation reaction kettle for hydrogen treatment. The preparation method has the following beneficial effects: the prepared zeolite composite magnesium base hydrogen storage material quickens the hydrogen sucking and releasing speed, and is prominent in dynamics performance when keeping higher hydrogen storage quantity; the hydrogen releasing quantity is 2.3-4.8 wt.%; and the practical development of the magnesium base hydrogen storage material is promoted.

Description

technical field [0001] The invention relates to a preparation method of a zeolite composite magnesium-based hydrogen storage material, belonging to the field of hydrogen storage material preparation. Background technique [0002] Hydrogen storage materials are substances that can reversibly absorb, store and release a large amount of hydrogen gas at a certain temperature and hydrogen pressure. They have the characteristics of large hydrogen storage capacity, no pollution, safety, reliability, and reusability. There are many kinds of hydrogen storage materials, among which hydrogen storage alloys have become the most widely used hydrogen storage materials due to the maturity of preparation technology and process. In metals and alloys, elemental Mg has a high hydrogen storage capacity, and its hydride MgH 2 The hydrogen storage capacity reaches 7.6wt%, and it has the advantages of abundant resources, low price, and light weight. Therefore, Mg and Mg-based alloys are consider...

Claims

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Application Information

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IPC IPC(8): B22F9/30H01M4/46
CPCB22F9/30H01M4/466Y02E60/10
Inventor 雷春生高力群薛红娟
Owner 雷春生
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