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CaMg2-based alloy hydride hydrolysis hydrogen production material and preparation method and application thereof

一种水解制氢、氢化物的技术，应用在多种金属氢化物、化学仪器和方法、氢等方向，能够解决氢化反应激活能高等问题，达到资源丰富、价格低廉、功耗少的效果

Inactive Publication Date: 2015-04-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But CaMg 2 Hydrogenation requires high temperature and high pressure, and the activation energy of hydrogenation reaction is high

Method used

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  • CaMg2-based alloy hydride hydrolysis hydrogen production material and preparation method and application thereof
  • CaMg2-based alloy hydride hydrolysis hydrogen production material and preparation method and application thereof
  • CaMg2-based alloy hydride hydrolysis hydrogen production material and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of CaMg 1.9 Ni 0.1 The procedure for -H hydride is as follows:

[0041] Weigh the pure metal (purity greater than 99%) with an atomic ratio of Ca:Mg:Ni of 1:1.9:0.1, wherein the burning losses of Ca and Mg are 7% and 6% respectively. Then put the weighed metals Ca, Mg, and Ni into the prepared crucible (the crucible is provided with a vent) in sequence, wherein the metal Ni block is put on top. Install the crucible into the high-frequency induction melting furnace and evacuate to 5×10 -3 Pa, and then 0.5atm argon gas was introduced as a protective gas. Start the high-frequency induction melting furnace, heat at the bottom power for 2 to 3 minutes, then increase the power to melt the alloy to a liquid state and keep it for 1 minute to mix the molten metal evenly, then cool down with the furnace to obtain alloy ingots, remelt twice and then cool with the furnace, obtained as CaMg 2 Based hydrogen storage alloy (see the attached X-ray diffraction pattern ...

Embodiment 2

[0043] Preparation of CaMg 1.8 Ni 0.2 The procedure for -H hydride is as follows:

[0044] Weigh the pure metal (purity greater than 99%) with an atomic ratio of Ca:Mg:Ni of 1:1.8:0.2, and add Ca and Mg to achieve a loss of 7%. Then put the weighed metals Ca, Mg, and Ni into the prepared crucible (the crucible is provided with a vent) in sequence, wherein the metal Ni block is put on top. Install the crucible into the high-frequency induction melting furnace and evacuate to 5×10 -3 Pa, and then 0.5atm argon gas was introduced as a protective gas. Start the high-frequency induction melting furnace, heat at the bottom power for 2 to 3 minutes, then increase the power to melt the alloy to a liquid state and keep it for 1 minute to mix the molten metal evenly, then cool down with the furnace to obtain alloy ingots, remelt twice and then cool with the furnace, obtained as CaMg 2 Based hydrogen storage alloy (see the attached X-ray diffraction pattern figure 1 in part c). Tak...

Embodiment 3

[0046] Preparation of CaMg 1.8 co 0.2 The procedure for -H hydride is as follows:

[0047] Weigh the pure metal with an atomic ratio of Ca:Mg:Co of 1:1.8:0.2 (purity greater than 99%), and add Ca and Mg to achieve a loss of 7%. Then put the weighed metals Ca, Mg, and Co into the prepared crucible (the crucible is provided with a vent hole) in sequence, and the metal Co block is placed on the top. Install the crucible into the high-frequency induction melting furnace and evacuate to 5×10 -3 Pa, and then 0.5atm argon gas was introduced as a protective gas. Start the high-frequency induction melting furnace, heat at the bottom power for 2 to 3 minutes, then increase the power to melt the alloy to a liquid state and keep it for 1 minute to mix the molten metal evenly, then cool down with the furnace to obtain alloy ingots, remelt twice and then cool with the furnace, obtained as CaMg 2 Based hydrogen storage alloy (see the attached X-ray diffraction pattern figure 1 part a)....

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Abstract

The invention discloses a CaMg2-based alloy hydride hydrolysis hydrogen production material and a preparation method and application of the CaMg2-based alloy hydride hydrolysis hydrogen production material. The general formula of the CaMg2-based alloy hydride hydrolysis hydrogen production material is CaMgxMyHz, wherein M is Ni or Co or Fe, 1.5<=x<2.0, 0<y<=0.5, and 3<=z<6. The preparation method of the material includes the following steps that first, three kinds of pure metal blocks are stacked in a crucible, wherein the M metal block is arranged on the top; second, the crucible is installed in a high-frequency induction melting furnace, vacuumization is performed, and argon is introduced; third, the high-frequency induction melting furnace is started, low-power heating is first performed, and then, the power is increased so that the metal blocks can be evenly molten; the crucible is cooled along with the furnace, alloy ingots are obtained, and CaMg2-based hydrogen storing alloy is obtained after the alloy ingots are smashed through a hammer; fourth, the alloy ingots which are smashed through the hammer are hydrogenated, and the hydrolysis hydrogen production material is obtained. The preparation method is simple, cost is low, the material can absorb hydrogen at normal temperature and is good in hydrogen absorbing performance, and prepared hydrogen is pure and can be directly introduced into a hydrogen fuel cell for use.

Description

technical field [0001] The present invention relates to the design and preparation of hydrogen storage materials and the hydrolysis of hydrides to produce hydrogen, which is based on CaMg 2 Alloying on the basis of binary alloys, adjusting the alloy phase structure to change the hydrogen storage performance of the material; designing the structure of the hydrogenation phase to improve the CaMg 2 Hydrolysis reaction kinetics of base alloy hydrides. Background technique [0002] Hydrogen energy has the advantages of high combustion value, zero pollution, and rich elements, making it the most potential secondary energy to replace traditional fossil energy. The large-scale development and utilization of hydrogen energy is expected to solve the dual problems of environmental degradation and energy shortage, but the three major problems of hydrogen production, storage, transportation and application must be solved first. In addition to the reverse reaction of the hydrogenation r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B6/24C01B3/06
CPCC01B3/06C01B6/24C01P2002/72B01J20/04B01J20/3078B22F9/023B22F2998/10C01B3/0031C01B3/065C22C1/02C22C1/04Y02E60/32Y02E60/36B22F9/08B22F9/04
Inventor 欧阳柳章段若明王辉刘江文朱敏
Owner SOUTH CHINA UNIV OF TECH
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