Magnesium/petroleum coke nano hydrogen-storing material

A technology of hydrogen storage materials and petroleum coke, which is applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of reducing the hydrogen storage density of materials, having no hydrogen storage capacity, and high cost of additives, so as to achieve low raw material costs and high hydrogen storage density. Large, resource-rich effects

Inactive Publication Date: 2008-08-27
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
  • Magnesium/petroleum coke nano hydrogen-storing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The particle size is 74μm, the content is 47wt% petroleum coke, 6wt% aluminum powder catalysts are mixed evenly, and roasted in a high-temperature box-type electric furnace at 660 ° C for 1 hour, and then mixed with a particle size of 74μm, content is 47wt% magnesium powder Put it into a 250mL vacuum ball mill tank, the mass ratio of balls to materials is 60:1, replace the air in the ball mill tank with hydrogen gas and fill it with hydrogen to 2MPa, and then put it in a planetary ball mill for 1.5 hours to make magnesium / petroleum coke nano Hydrogen storage material. The transmission electron microscope photograph of the hydrogen storage material is as follows: figure 1 Shown, show that its particle size is 10-100nm; Its X-ray diffraction analysis is as figure 2 shown, indicating that there is MH 2 Generated; its differential scanning calorimetry curve is as image 3 As shown, it shows that the starting temperature of hydrogen desorption is 227°C, and the main peak...

Embodiment 2

[0022] The difference from Example 1 is that the raw materials are 25wt% magnesium, 60wt% petroleum coke, and 15wt% aluminum, and the hydrogen desorption capacity 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, and 2wt% aluminum, and the hydrogen desorption capacity 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 nano hydrogen storage material. Background technique [0002] With the increasing problems of fuel oil pollution and oil shortage, it is imminent to develop new energy sources. Hydrogen is a clean new energy source, and the key to utilizing 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 increase the hydrogen storage density of the material (the mass percentage of the stored hydrogen gas to the material), second, how to make the operating conditions of the material absorb and release hydrogen milder, and third, How to reduce the cost of hydrogen storage materials and save precious metal resources. Metal magnesium is rich in resources, and its theoretical hydrogen storage density can reach 7.6wt%, but its hydrogen release temperature is as high as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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