Magnesium-based hydrogen desorption material, preparation method thereof and hydrolysis hydrogen production method

A hydrogen material, magnesium hydride technology, applied in the production of hydrogen, chemical instruments and methods, alkali metal/alkaline earth metal/beryllium/magnesium hydride, etc., can solve the problem of low hydrolysis reaction rate and conversion rate, and damage to the continuity of hydrolysis reaction , insoluble in water and other issues, to achieve the effect of large hydrogen production, sustainable hydrogen desorption, and high hydrolysis conversion rate

Active Publication Date: 2020-09-11
SHANGHAI MG POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrolysis product of magnesium, Mg(OH) 2 Insoluble in water, and the Mg(OH) formed at the beginning of the hydrolysis reaction 2 The layer will cover the surface of the reactant and easily cover the unreacted magnesium particles, thus seriously destroying the continuity of the hydrolysis reaction, resulting in low hydrolysis reaction rate and conversion rate

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  • Magnesium-based hydrogen desorption material, preparation method thereof and hydrolysis hydrogen production method
  • Magnesium-based hydrogen desorption material, preparation method thereof and hydrolysis hydrogen production method
  • Magnesium-based hydrogen desorption material, preparation method thereof and hydrolysis hydrogen production method

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Embodiment 1

[0083] Embodiment 1: The composition and mass ratio of the hydrogen-releasing material in this embodiment are respectively: 45 parts of magnesium hydride and 5 parts of titanium dioxide. The preparation method of the hydrogen-releasing material in this embodiment is as follows: heating and evaporating the magnesium arc; cooling the evaporated magnesium vapor to condense and settle; hydrogenating the condensed product to obtain the hydrogenated product with a core-shell structure Magnesium; and stirring and mixing magnesium hydride with a core-shell structure and titanium dioxide according to the ratio to obtain the hydrogen-releasing material in powder or granular form, wherein the hydrogenation temperature is 350 ° C, and the hydrogen pressure is 3.0 MPa. The time is 4 hours, the stirring speed of stirring and mixing is 400 rpm, and the stirring time is 30 minutes.

[0084] Figure 3a-Figure 3b It is a schematic diagram of the results of the hydrolysis hydrogen release test ...

Embodiment 2

[0086] Embodiment 2: The composition and mass ratio of the hydrogen-releasing material in this embodiment are respectively: 45 parts of magnesium hydride and 5 parts of aluminum oxide. The preparation method of the hydrogen-releasing material in this embodiment is as follows: heating and evaporating the magnesium arc; cooling the evaporated magnesium vapor to condense and settle; hydrogenating the condensed product to obtain the hydrogenated product with a core-shell structure Magnesium; and stirring and mixing magnesium hydride with a core-shell structure and aluminum sesquioxide according to the ratio to obtain the hydrogen-releasing material in powder or granular form, wherein the hydrogenation temperature is 350°C and the hydrogen pressure is 3.0MPa , the hydrogenation time is 4h, the stirring speed of stirring and mixing is 300 rpm, and the stirring time is 1h.

[0087] Figure 4a-Figure 4b It is a schematic diagram of the results of the hydrolysis hydrogen release test ...

Embodiment 3

[0089] Embodiment 3: The composition and mass ratio of the hydrogen-releasing material in this embodiment are respectively: 45 parts of magnesium hydride and 5 parts of ferric oxide. The preparation method of the hydrogen-releasing material in this embodiment is as follows: heating and evaporating the magnesium arc; cooling the evaporated magnesium vapor to condense and settle; hydrogenating the condensed product to obtain the hydrogenated product with a core-shell structure Magnesium; and stirring and mixing magnesium hydride with a core-shell structure and ferric oxide according to the ratio to obtain the hydrogen-releasing material in powder or granular form, wherein the hydrogenation temperature is 350°C and the hydrogen pressure is 3.0MPa , the hydrogenation time is 4h, the stirring speed of stirring and mixing is 350 rpm, and the stirring time is 40min.

[0090] Figure 5a-Figure 5b It is a schematic diagram of the results of the hydrolysis hydrogen release test at diff...

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Abstract

The invention discloses a magnesium-based hydrogen desorption material, a preparation method thereof and a hydrolysis hydrogen production method. The hydrogen desorption material comprises magnesium hydride and a catalyst, wherein the catalyst comprises at least one of oxide, chloride and hydride; and the mass ratio of the magnesium hydride to the catalyst is as follows: 1-50 parts of the magnesium hydride and 1-30 parts of the catalyst. The hydrogen desorption material disclosed by the invention has the characteristics of sustainable hydrogen desorption, high hydrogen production capacity, high hydrolysis conversion rate and the like.

Description

technical field [0001] The present invention generally relates to the technical field of hydrogen production. More specifically, the present invention relates to a magnesium-based hydrogen-releasing material, a preparation method thereof and a method for producing hydrogen by hydrolysis. Background technique [0002] In recent years, as a new type of practical and safe hydrogen production technology, hydrolysis hydrogen production has received great attention due to its advantages such as wide source of raw materials, large hydrogen production capacity, high hydrogen purity, and no harm to the environment. It is one of the hot spots that scholars from all over the world are competing to study. NaBH 4 The hydrolysis hydrogen production process of the company is relatively mature, and has realized the rapid supply of hydrogen for fuel cells. But since NaBH 4 High cost, easy catalyst failure, hydrolysis product NaBO 2 Disadvantages such as low recovery and regeneration rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/06C01B6/04B01J31/26B01J31/06B01J27/138B01J23/745B01J23/14B01J23/06B01J23/02B01J21/06B01J21/04
CPCC01B3/065C01B6/04B01J21/063B01J23/14B01J23/06B01J23/745B01J21/04B01J23/02B01J27/138B01J31/26B01J31/06C01B2203/0261C01B2203/1041C01B2203/1076Y02E60/36
Inventor 刘兵银
Owner SHANGHAI MG POWER TECH CO LTD
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