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Coordination hydride catalyzed reversible hydrogen storage materials and method of preparing the same

A technology of coordination hydride and hydrogen storage material, applied in the field of coordination hydride catalyzed reversible hydrogen storage material and its preparation, can solve the problems of slow hydrogen absorption and desorption kinetics and the like

Inactive Publication Date: 2008-01-23
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The thermodynamic properties of complex hydrides are quite outstanding, but the problem is that the kinetics of hydrogen absorption and desorption of the material below 150 °C is relatively slow

Method used

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  • Coordination hydride catalyzed reversible hydrogen storage materials and method of preparing the same
  • Coordination hydride catalyzed reversible hydrogen storage materials and method of preparing the same
  • Coordination hydride catalyzed reversible hydrogen storage materials and method of preparing the same

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Effect test

Embodiment 1

[0036] NaAlH was prepared by high-energy ball milling (weight ratio of ball to material 4 / 1, hydrogen pressure 3MPa). 4 Add 1mol% Ti(OC 4 h 9 ) 4 The hydrogen absorption and desorption kinetic curve at 150°C of the material ball milled for 4 hours is shown in Figure 1. The hydrogen absorption and desorption amount of the material reached 2.9wt% within 6 hours, and the hydrogen desorption amount was only 1.2wt%.

Embodiment 2

[0038] NaAlH was prepared by high-energy ball milling (weight ratio of ball to material 10 / 1, hydrogen pressure 3MPa). 4 Add 2mol%Ti(OC 4 h 9 ) 4 The hydrogen absorption and desorption kinetic curve at 150°C of the material ball milled for 4 hours is shown in Figure 2. The hydrogen absorption and desorption amount of the material can reach 4.3wt% and 3.4wt% within 6 hours.

Embodiment 3

[0040] NaAlH was prepared by high-energy ball milling (weight ratio of ball to material 20 / 1, hydrogen pressure 3MPa). 4 Add 6mol% Ti(OC 4 h 9 ) 4 The hydrogen absorption and desorption kinetic curve at 150°C of the material ball milled for 4 hours is shown in Figure 3. The hydrogen absorption and desorption amount of the material reached 3.8wt% and the hydrogen desorption amount reached 2.7wt% within 6 hours.

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Abstract

The invention relates to a novel high capacity hydrogen storage material, namely coordination hydride, the chemical formula is A(MH4)n. The invention adds titanium catalyst Ti(OC4H9)4 or TiC13 .1 / 3 AlCl3 in the classic coordination hydride lithium aluminium hydride and sodium aluminum hydride by the high energy ball mill method under the protection of hydrogen pressure, therefore reaching reversible storage hydrogen. The preparation method of the coordination hydride catalyzing reversible storage hydrogen seals the coordination hydride (LiA1H4 or NaA1H4), titanium catalyst Ti(OC4H9)4 or TiC13 .1 / 3 AlCl3 and steel ball in a stainless ball mill Pot, and mill ball with high energy under the protection of hydrogen pressure. The material can be used as a high capacity hydrogen storage material, the reversible hydrogen adsorption volume can reach above 4.0wt per cent at 150 DEG C., the reversible hydrogen adsorption volume to 0.1MPa hydrogen pressure also can reach above 3.0 wt per cent.

Description

technical field [0001] The invention relates to a coordination hydride catalytic reversible hydrogen storage material and a preparation method thereof. Coordination hydride A (MH 4 ) n (LiAlH 4 or NaAlH 4 ) into the titanium-based catalyst (Ti(OC 4 h 9 ) 4 or TiCl 3 1 / 3AlCl 3 ), so as to obtain a new type of hydrogen storage material with high capacity. Background technique [0002] Energy is the source of human activities, and clean energy is the basis for the sustainable development of human society. In recent years, fossil fuels such as oil and coal have been increasingly depleted due to over-exploitation, which has triggered a profound energy crisis in human society. Therefore, the development of new energy sources to replace fossil fuels is an urgent and important issue for all mankind. Among all new energy sources, hydrogen energy will most likely become the future energy source of mankind. In recent years, hydrogen has attracted increasing attention as an a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02C01B6/24
Inventor 王同涛王树茂蒋利军刘晓鹏詹锋李国斌李华玲
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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