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Method for preparing porous hydrogen storage material

A hydrogen storage material, solvothermal synthesis technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as difficulty in applying vehicle-mounted hydrogen fuel cells, poor hydrogen storage performance, etc. , to achieve good hydrogen storage effect and good hydrogen storage effect

Inactive Publication Date: 2011-06-01
SHANDONG HONGYI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For traditional metal or metal alloy hydrogen storage materials, although the above-mentioned porous hydrogen storage materials can improve the hydrogen storage performance of the material under low temperature conditions by adjusting the pore diameter or volume, but in an environment slightly higher than normal temperature, The poor hydrogen storage performance of this material makes it difficult to be used in vehicle-mounted hydrogen fuel cells

Method used

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  • Method for preparing porous hydrogen storage material
  • Method for preparing porous hydrogen storage material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 0.3mmol of 4,4'-biphenyldicarboxylic acid to the reaction vessel, continue to add 4.0mL of N,N'-dimethylacetamide to dissolve, then add 2.0mL of absolute ethanol, 0.3mL of 0.4mol / L piperazine solution and 0.2mL 2.7mol / L nitric acid solution, after stirring for 20min, add 0.2mmol indium chloride, continue stirring for 20min, then transfer the reaction vessel to a dry box and heat up to 85°C, and continue to heat up to Keep at 105°C for 48 hours, then slowly cool down to 60°C at a rate of 5°C / h, and finally cool naturally to room temperature.

[0033] The mixture in the reaction vessel was filtered, washed with absolute ethanol, and evaporated to dryness naturally to obtain crystals with a yield of about 63%.

[0034] see figure 1 Shown is the isothermal curve of the hydrogen storage material prepared in this example at -196°C for absorbing and releasing hydrogen. Curve 1 is the relationship between the volume and pressure of hydrogen absorbed by the hydrogen storag...

Embodiment 2

[0037]Add 0.2mmol of 2,6-naphthalene dicarboxylic acid to the reaction vessel, continue to add 3.0mL of N,N'-dimethylacetamide to dissolve it, then add 2.0mL of absolute ethanol, 0.3mL of 0.4mol / L Piperazine solution and 0.4mL 2.7mol / L nitric acid solution, stirred for 20min, then added 0.2mmol indium nitrate, continued to stir for 20 minutes, then transferred the reaction vessel to a dry box and raised the temperature to 85°C, and continued to heat up to 105°C after 24h of reaction ℃ and kept for 48h, then slowly cooled to 60℃ at a rate of 5℃ / h, and finally cooled to room temperature naturally.

[0038] The mixture in the reaction vessel was filtered, washed with absolute ethanol, and evaporated to dryness naturally to obtain crystals with a yield of about 46%.

Embodiment 3

[0040] Add 0.15mmol of 3,3',4,4'-biphenyltetracarboxylic acid into the reaction vessel, continue to add 4.0mL of N,N'-dimethylacetamide to dissolve it, and then add 5.0mL of absolute ethanol in sequence , 0.4mL 0.4mol / L piperazine solution and 0.4mL 2.7mol / L nitric acid solution, after stirring for 20min, add 0.3mmol indium sulfate, continue stirring for 20 minutes, then transfer the reaction vessel to a dry box and heat up to 85°C, react After 24 hours, continue to raise the temperature to 105°C and maintain it for 48 hours, then slowly cool down to 60°C at a rate of 5°C / h, and finally cool down to room temperature naturally.

[0041] The mixture in the reaction vessel was filtered, washed with absolute ethanol, and evaporated to dryness naturally to obtain crystals with a yield of about 49%.

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Abstract

The invention provides a method for preparing a porous hydrogen storage material. A solvent thermal synthesis method is adopted in the method, indium salt and organic carboxylic acid are used as reactants, piperazine is used as a template agent, the reaction temperature is controlled to be between 80 and 110 DEG C, the pH value of a reaction solution is regulated to be between 4 and 6, and then the porous hydrogen storage material is obtained; and the organic carboxylic acid is an aromatic ring of C6-C20 or a condensed ring with an aromatic ring. The metallic organic porous material prepared by the method not only has a good hydrogen storage effect at a low temperature, but also has a good hydrogen storage effect at the temperature slightly higher than room temperature. Proven by experiments, the hydrogen absorption quantity of the hydrogen storage material provided by the invention at the temperature of 100 DEG C under 20P reaches 30 cm<3> / g, and the hydrogen release quantity reaches32 cm<3> / g.

Description

technical field [0001] The invention relates to the field of hydrogen storage materials, in particular to a preparation method of porous hydrogen storage materials. Background technique [0002] With the depletion of petrochemical resources and the ensuing environmental problems such as the greenhouse effect, people's awareness of environmental protection has gradually strengthened, and people's demand for clean energy has also increased dramatically. As a clean energy with high combustion heat and non-polluting combustion products, hydrogen energy is expected to be applied to vehicle-mounted hydrogen fuel cells. Therefore, the application of hydrogen energy has been widely concerned and highly valued by scholars from all over the world. [0003] The large-scale storage of hydrogen is one of the key technologies for hydrogen energy application, and the key to hydrogen storage technology lies in the selection of hydrogen storage materials with high hydrogen absorption perform...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30
Inventor 季建伟赵洪义朱化雨朱孔赞
Owner SHANDONG HONGYI TECH
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