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Magnesium/petroleum coke nano hydrogen-storing material

A technology for hydrogen storage material and petroleum coke, applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of high cost of additives, no hydrogen storage capacity, and reduced hydrogen storage density of materials, so as to achieve low cost of raw materials and hydrogen storage. The effect of high density and rich resources

Inactive Publication Date: 2007-05-30
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to improve the hydrogen absorption and desorption kinetics of magnesium, Cheng Huiming et al. added carbon nanotubes, graphite, activated carbon, carbon black, fullerene, boron nitride, asbestos, etc. to magnesium by ball milling in 2005. However, the above additives generally Without hydrogen storage capacity, the hydrogen storage density of the material will be reduced, and the cost of additives is higher

Method used

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  • Magnesium/petroleum coke nano hydrogen-storing material
  • Magnesium/petroleum coke nano hydrogen-storing material

Examples

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Effect test

Embodiment 1

[0020] The particle size is 74μm, the content of 47wt% petroleum coke and 6wt% aluminum powder catalyst are mixed uniformly, and roasted in a high-temperature box-type electric furnace at 660 ℃ for 1 hour, and then mixed with magnesium powder with a particle size of 74μm and a content of 47wt% Put it into a 250mL vacuum ball milling tank, the mass ratio of grinding balls to material is 60:1, replace the air in the ball mill tank with hydrogen and fill it with hydrogen to 2MPa, and then place it in a planetary ball mill for 1.5 hours to obtain magnesium / petroleum coke nanometers. hydrogen storage material. The transmission electron microscope photo of this hydrogen storage material is shown in Figure 1, which shows that its particle size is 10-100 nm; its X-ray diffraction analysis is shown in Figure 2, indicating that there are MH 2 Its differential scanning calorimetry analysis curve is shown in Figure 3, indicating that its hydrogen desorption temperature is 227 °C, and its ...

Embodiment 2

[0022] The difference from Example 1 is that the raw materials are 25wt% magnesium, 60wt% petroleum coke, 15wt% aluminum, and the hydrogen desorption amount of the obtained hydrogen storage material is 4.32wt%.

Embodiment 3

[0024] The difference from Example 1 is that the raw materials are 68wt% magnesium, 30wt% petroleum coke, 2wt% aluminum, and the hydrogen desorption amount of the obtained hydrogen storage material is 6.68wt%.

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Abstract

It relates to a magnesium or oil coke nanometer composite hydrogen storing material. The material is made oil coke with 30wt%-60wt% grain size 10-100nm, 2wt%-15wt% catalyst Cu,Al,Fe,Co, Ni,Pd,Mn, either one of them or several with the combination of magnesium. It bakes oil coke and catalysts in 660-1600DEG C temperature for one hour, ball grinding with magnesium powder in 0.5-3MPa hydrogen for 0.5-5 hours. It features in the high density of hydrogen of the material, with moderate hydrogen drawing and releasing, low cost in material and simple making process.

Description

technical field [0001] The invention relates to a magnesium / petroleum coke nanometer hydrogen storage material. Background technique [0002] With the increasingly serious problems of fuel pollution and oil shortage, the development of new energy sources is imminent. Hydrogen is a clean new energy source, and the key to the utilization of hydrogen energy is to develop high-performance hydrogen storage materials. At present, the problems that need to be solved in the large-scale application of hydrogen storage materials are: first, how to improve the hydrogen storage density of the material (the mass percentage of stored hydrogen to the material); second, how to moderate the operating conditions for the material to absorb and release hydrogen; third How to reduce the cost of hydrogen storage materials and save precious metal resources. Magnesium metal is rich in resources, and its theoretical hydrogen storage density can reach 7.6wt%, but its hydrogen release temperature is...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30
Inventor 周仕学谭琦胡秀颖姜瑶瑶杨敏建
Owner SHANDONG UNIV OF SCI & TECH
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