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A kind of room temperature hydrogen-absorbing carbon airgel material and preparation method thereof

A carbon aerogel, room temperature technology, applied in the field of hydrogen absorption, can solve problems such as explosion and corrosion of active metal materials, and achieve the effects of convenient use, reduced corrosion, and adjustable thickness

Active Publication Date: 2022-04-29
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a room temperature hydrogen-absorbing carbon airgel material and its preparation method to solve the problems that the hydrogen concentration in the confined space is too high to easily cause explosion and hydrogen will cause corrosion of active metal materials.

Method used

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  • A kind of room temperature hydrogen-absorbing carbon airgel material and preparation method thereof
  • A kind of room temperature hydrogen-absorbing carbon airgel material and preparation method thereof
  • A kind of room temperature hydrogen-absorbing carbon airgel material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0041] The preparation of embodiment 1 carbon airgel

[0042] Weigh 0.2 grams of graphene oxide (JCGO-98-1-50) and 0.1 grams of carbon nanotubes (JCMT-70-35-5) respectively, place them in 100 ml of deionized water, and ultrasonically disperse them for 60 minutes to form graphene oxide - carbon nanotube mixed solution (mixed solution 1); then add dropwise 10 milliliters, 0.04 mol / liter of sodium bisulfite solution to the above mixed solution, continue ultrasonication for 30 minutes and reduce at 90 degrees Celsius for 5 hours at high temperature , to obtain a reduced graphene oxide-carbon nanotube mixed solution (mixed solution 2); the mixed solution 2 is poured into a container of a specified shape, put into a freeze dryer and frozen at -5 degrees Celsius for 72 hours to remove moisture, that is carbon aerogels.

Embodiment 2

[0043] The preparation of the carbon aerogel of embodiment 2 load nano palladium catalysts

[0044] Put 0.075 grams of carbon airgel in 10 milliliters of deionized water, then add 10 milliliters of 0.04 mmol / L sodium tetrachloropalladate solution dropwise under the action of ultrasound, and continue to sonicate for 5 minutes after the addition; then add dropwise 5 ml, 0.05 mmol / L (excessive) sodium borohydride solution, after the dropwise addition, sonicate for 5 minutes. Take out the carbon aerogel loaded with nano-palladium catalyst and put it into a lyophilizer and freeze it at -5 for 72 hours to remove moisture, and then obtain the dry carbon aerogel loaded with nano-palladium catalyst.

Embodiment 3

[0045] The preparation of the carbon aerogel of embodiment 3 loaded nano palladium / nickel catalysts

[0046] 0.075 g of carbon airgel was placed in 10 ml of deionized water, and then 10 ml of a mixed solution of 0.03 mmol / L sodium tetrachloropalladate and 0.02 mmol / L nickel nitrate monohydrate was added dropwise under ultrasonication, After the dropwise addition, continue to sonicate for 5 minutes; then add 5 ml of 0.05 mmol / L (excessive) sodium borohydride solution dropwise, and then sonicate for 5 minutes after the dropwise addition. Take out the carbon aerogel loaded with nano-palladium / nickel catalyst and put it into a lyophilizer and freeze it at -5 for 72 hours to remove moisture to obtain a dry carbon aerogel loaded with nano-palladium / nickel catalyst.

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Abstract

The invention provides a carbon airgel material with room temperature hydrogen absorption function, which comprises carbon airgel, a metal catalyst and an alkyne-based organic compound. The carbon airgel material of the present invention has the characteristics of irreversible hydrogen absorption at room temperature, high hydrogen absorption capacity, formability, tailorability, adjustable thickness, and convenient use. It can be used as a hydrogen absorption cushion material in a closed container, and can effectively reduce the container The concentration of hydrogen and its isotopes in the medium to prevent explosion hazards.

Description

technical field [0001] The invention relates to the field of hydrogen absorption, in particular to a carbon airgel material for hydrogen absorption at room temperature, which is used for irreversibly absorbing hydrogen and its isotopes in a closed space at room temperature to reduce the hydrogen concentration. Background technique [0002] Hydrogen (H 2 ) generation and accumulation is inevitable, and its main sources are: dissolved hydrogen in metals and polymers, H 2 O.CO 2 , CO, etc. react on the surface of the catalyst to produce hydrogen and the hydrogen released from the degradation of organic materials by irradiation aging. If the hydrogen is not removed in time, the hydrogen pressure in the closed system will be too high, and it may explode when it encounters oxygen; in addition, the hydrogen will also deteriorate the optical components and electronic circuits in the system, resulting in deterioration of component performance and circuit failure. or corrosion of r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01D53/02B01J20/30
CPCB01J20/22B01J20/02B01J20/20B01J20/28047B01D53/02B01D2257/108
Inventor 郭亚昆帅茂兵陈长安胡殷祝婉秋叶小球马邦俊陈艳平杨晓娇
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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