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Method for producing titanium carbide hydrogen storage material

A hydrogen storage material and titanium carbide technology, applied in chemical instruments and methods, hydrogen, inorganic chemistry, etc., can solve the problems of restricting the popularization and application of solid-state hydrogen storage materials, high hydrogen desorption temperature, and high hydrogen storage capacity, and achieve excellent chemical stability. The effect of stability, small volume change and simple preparation method

Inactive Publication Date: 2016-12-21
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, magnesium-based hydrogen storage alloys have high hydrogen storage capacity and low cost, but the hydrogen release temperature is high; metal coordination hydrides have high hydrogen storage capacity, but are difficult to rehydrogenate, etc.
These deficiencies limit the further popularization and application of solid-state hydrogen storage materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) raw material preparation: prepare the raw material titanium powder and graphite powder required for preparing titanium carbide hydrogen storage materials, the atomic ratio of the carbon of the graphite powder and the titanium of the titanium powder is 0.5;

[0018] (2) Mixing of raw materials: mix titanium powder and graphite powder evenly;

[0019] (3) Compression molding: press the uniformly mixed mixed powder into a cylinder with a height of 6 mm and a diameter of 12 mm;

[0020] (4) Sintering: Put the pressed raw materials in a sintering furnace, first heat the briquette to 400°C for 3 hours, then heat to 1350°C, and hold for 2 hours to make the titanium powder and graphite powder react; then continue to rise Temperature to 1900°C, heat preservation for 2 hours, so that the titanium carbide composition after the reaction is uniform; the above sintered block is cooled to 700°C with the furnace and heat preservation for 40 hours, and then cooled to room temperatur...

Embodiment 2

[0023] (1) raw material preparation: prepare the raw material titanium powder and graphite powder required for preparing titanium carbide hydrogen storage materials, the atomic ratio of the carbon of the graphite powder and the titanium of the titanium powder is 0.65;

[0024] (2) Mixing of raw materials: mix titanium powder and graphite powder evenly;

[0025] (3) Compression molding: press the uniformly mixed mixed powder into a cylinder with a height of 6 mm and a diameter of 12 mm;

[0026] (4) Sintering: put the pressed raw materials in a sintering furnace, first heat the briquette to 500°C for 2 hours, then further heat to 1400°C, and hold for 2 hours to make the titanium powder and graphite powder react; then continue to rise High temperature to 1950°C, heat preservation for 2 hours, so that the titanium carbide composition after the reaction is uniform; the above sintered block is cooled to 700°C with the furnace and heat preservation for 30 hours, and then cooled to r...

Embodiment 3

[0029] (1) Raw material preparation: Prepare titanium carbide powder and titanium powder with a near-stoichiometric ratio of the raw materials required for preparing titanium carbide hydrogen storage materials, the atoms of the sum of the carbon in the titanium carbide powder and the titanium in the titanium carbide powder and the titanium powder The ratio is 0.7;

[0030] (2) Mixing of raw materials: mix titanium carbide powder and titanium powder evenly;

[0031] (3) Compression molding: press the uniformly mixed mixed powder into a cylinder with a height of 6 mm and a diameter of 12 mm;

[0032] (4) Sintering: Put the pressed raw materials in a sintering furnace, first heat the briquette to 600°C for 1.5 hours, then further heat to 1500°C, and hold for 3 hours to make the titanium carbide powder and titanium powder react; then continue Raise the temperature to 2000°C and keep it warm for 2 hours to homogenize the titanium carbide composition after the reaction; then cool t...

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PUM

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Abstract

The invention relates to a method for producing a titanium carbide hydrogen storage material. According to a relation between carbon content and hydrogen storage performance, the titanium carbide hydrogen storage material is produced by the steps of material preparation, batch mixing, compacting and sintering. The titanium carbide hydrogen storage material has excellent chemical stability and antioxidation capability, and has high anti-impurity gas poisoning capability while hydrogen is stored; the type of titanium carbide hydrogen storage material and its hydrogenated hydride crystal lattice is same, volume change during a hydrogen storage / hydrogen desorption cycle process is small, the hydrogen storage cycle stability is high, and the preparation method has the advantages of simple process, rich raw materials and low cost.

Description

Technical field: [0001] The invention belongs to the technical field of hydrogen storage materials, and in particular relates to a preparation method of titanium carbide hydrogen storage materials. Background technique: [0002] Combustion of fossil fuels releases large amounts of greenhouse gas CO 2 and harmful gas SO 2 , NO x etc., resulting in increasingly serious environmental problems such as the "greenhouse effect" and air pollution. This problem is especially prominent in China, which is undergoing rapid economic development. In the face of increasingly serious environmental pollution, my country will gradually adjust its coal-based energy supply strategy in the future, focusing on improving the impact of energy use on the environment. To achieve this goal, the development and utilization of clean and sustainable new energy is an inevitable choice. Hydrogen energy is considered to be an ideal future "green energy" due to its wide range of sources, high combustion...

Claims

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Application Information

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IPC IPC(8): C04B35/56C04B35/622C01B3/00
CPCC01B3/0084C04B35/5611C04B35/622C04B2235/404C04B2235/425Y02E60/32
Inventor 丁海民柳青范孝良石玉
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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