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Preparation method of hydrogen elimination material

A technology of hydrogen elimination and nanomaterials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor hydrogen elimination effect and low hydrogen absorption capacity, reduce agglomeration, increase contact probability, and improve hydrogen elimination reaction rate. Effect

Active Publication Date: 2019-03-12
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrogen absorbing materials prepared in the prior art have low hydrogen absorbing capacity and poor hydrogen elimination effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of hydrogen elimination material, comprising the following steps:

[0023] Step 1. In parts by weight, take 1 part of carbon nanotubes and add them to 200 parts of fuming nitric acid, stir and react at a temperature of 50°C for 3 hours, then add 30 parts of 4-ethynyl aniline, 50 parts of barium nitrite and 2 parts of azo Diisobutylcyanide, stirred at 150°C, condensed and refluxed for 5 hours, then diluted with distilled water, purified by centrifugal separation, washed 5 times with an organic solvent, and vacuum-dried to obtain alkynylated carbon nanotubes; the centrifugal separation and purification The rotating speed is 10000r / min, the temperature is 15°C, and the time is 10min; the organic solvent used for washing the organic solvent is toluene; the vacuum drying conditions are: temperature 120°C, vacuum degree -0.05MPa, drying time 24 hours;

[0024] Step 2. Disperse 1 part of alkynylated carbon nanotubes in 20 parts of N,N-dimethylformamide in ...

Embodiment 2

[0027] A preparation method of hydrogen elimination material, comprising the following steps:

[0028] Step 1. In parts by weight, take 1 part of carbon nanotubes and add 500 parts of fuming nitric acid, stir and react at a temperature of 50°C for 3 hours, then add 50 parts of dimethyl propargylamine, 30 parts of sodium nitrite and 3 parts of iso Propylbenzene hydrogen peroxide, stirred at 150°C, condensed and refluxed for 5 hours, then diluted with distilled water, purified by centrifugal separation, washed 5 times with an organic solvent, and vacuum-dried to obtain alkynylated carbon nanotubes; the centrifugal separation The speed of purification is 12000r / min, the temperature is 15°C, and the time is 10min; the organic solvent used for washing the organic solvent is xylene; the vacuum drying conditions are: temperature 120°C, vacuum degree -0.05MPa, drying time 24 Hour;

[0029] Step 2. Disperse 1 part of alkynylated carbon nanotubes in 30 parts of toluene in parts by weig...

Embodiment 3

[0032] A preparation method of hydrogen elimination material, comprising the following steps:

[0033] Step 1. In parts by weight, take 1 part of fullerene and add it to 300 parts of fuming sulfuric acid, stir and react for 5 hours at a temperature of 60° C., then add 50 parts of dimethyl propargylamine, 30 parts of magnesium nitrite and 3 parts of even Azodiisoheptanonitrile, stirred at 150°C, condensed and refluxed for 5 hours, then diluted with distilled water, purified by centrifugal separation, washed 5 times with an organic solvent, and dried in vacuum to obtain an alkynylated fullerene; the centrifugal separation The speed of purification is 12000r / min, the temperature is 25°C, and the time is 10min; the organic solvent used for washing the organic solvent is xylene; the vacuum drying conditions are: temperature 100°C, vacuum degree -0.05MPa, drying time 24 Hour;

[0034] Step 2. Disperse 1 part of alkynylated fullerene in 50 parts of tetrahydrofuran in parts by weight...

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Abstract

The invention discloses a preparation method of a hydrogen elimination material. The method comprises the following steps: 1, oxidizing a carbon nanomaterial, and then activating and alkynylating to obtain an alkynylated carbon nanomaterial having a hydrogen storage function; 2, dispersing the alkynylated carbon nanomaterial in a solvent, adding a precious metal salt solution, heating and stirring; then, adding a reducing agent solution, and continuing to stir to obtain an alkynylated carbon nanomaterial-loaded nano-precious metal hydrogen elimination material. According to the preparation method, the carbon nanomaterial having a hydrogen storage function is firstly oxidized, and is then subjected to activation and alkynylation, so that the alkynylated carbon nanomaterial having the hydrogen storage function is obtained; the alkynylated carbon nanomaterial-loaded nano-precious metal hydrogen elimination material is then prepared by using an in-situ reduction method. In the alkynylatedcarbon nanomaterial-loaded nano-precious metal hydrogen elimination material, the carbon nanomaterial has the hydrogen storage function, and the nano-precious metal acts as a catalyst and can enable the unsaturated alkyne group to react with hydrogen at the normal temperature, so that a hydrogen elimination function is realized.

Description

technical field [0001] The invention belongs to the technical field of preparation of hydrogen-absorbing materials, and in particular relates to a preparation method of an alkynylated carbon nano-material loaded nano-noble metal hydrogen-absorbing material. Background technique [0002] With the increasing shortage of fossil fuels and the continuous deterioration of the ecological environment, the search and development of a clean and renewable new energy source has attracted worldwide attention. Under the dual requirements of environmental pressure and energy crisis, hydrogen energy is emerging as a green energy and energy carrier with abundant reserves, wide sources and high energy density. However, the lack of economical, efficient and safe hydrogen storage technology has become the main bottleneck restricting the large-scale application of hydrogen energy. For the research on hydrogen storage technology at the present stage, the existing hydrogen storage materials have ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/20
Inventor 杨文彬丁泽何方方邓浩范敬辉张凯
Owner SOUTHWEAT UNIV OF SCI & TECH
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