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Aluminium mesoporous material and preparation method thereof

An aluminum mesoporous and raw material technology, which is applied in the field of mesoporous materials to achieve the effects of high porosity, high purity, and simple and easy preparation process

Active Publication Date: 2017-05-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for porous materials at the nanoscale, the multifunctional combination and regulation for different energy storage requirements is still a difficult problem in the field of materials.

Method used

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  • Aluminium mesoporous material and preparation method thereof
  • Aluminium mesoporous material and preparation method thereof
  • Aluminium mesoporous material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation steps of an aluminum mesoporous material are as follows:

[0030] (1) Weigh NaAlH with a purity of 98% under the protection of an argon atmosphere with a concentration of 99.9999% 4 The powder is pressed and formed by a tableting device, the pressure used during pressing is 11-13 MPa, and the holding time is 10 minutes. Then place the formed sheet material in an alumina crucible, and coat a layer of copper foil on the outer layer of the alumina crucible, and leave holes on the copper foil to facilitate the control of the gap between the copper foil and the crucible in the subsequent process. Pores to control air flow sweep and output.

[0031] (2) Place the sample processed in step (1) in a tube furnace, wash it with argon three times, adjust the argon intake airflow, and at the same time use a mechanical pump to vacuumize to achieve dynamic balance and keep the negative pressure in the tube stable. Set the temperature to roast the sample. During the r...

Embodiment 2

[0042] Adjust the argon flow of the sample during the roasting process in step (2), and set it to 60sccm, 90sccm, and 100sccm respectively, and the rest of the steps are the same as in Example 1 to investigate the impact of different flow rates on the final obtained material.

[0043] The experimental results show that when the intake flow rate was low (60sccm), the sample purity decreased, and when the intake flow rate was 90sccm, the sample purity was high, and the refinement showed that it reached 98%, and when the intake flow rate was increased to 100sccm, the result and 90sccm is basically the same.

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Abstract

The invention discloses an aluminium mesoporous material and a preparation method thereof. The pore diameter of the aluminium mesoporous material is 5 nm to 15 nm. The preparation method comprises the steps of roasting the raw material NaAlH4 at the inert gas atmosphere; and cooling the material after roasting. According to the prepared aluminium mesoporous material, the preparation method is relatively easy and fesible, the pore diameter is 5 nm to 15 nm, and the aluminium mesoporous material can be utilized as a novel structure catalyst to perform nano confinement on hydrogen storage / energy storage materials.

Description

technical field [0001] The invention relates to a mesoporous material, in particular to an aluminum mesoporous material whose pore size distribution is concentrated at about 5-15nm, and also relates to a preparation method and application of the material. Background technique [0002] In 1992, Mobil scientists Kresge and others successfully prepared mesoporous SiO with adjustable pore size for the first time. 2 , named MCM-41. In 2001, Jonah Erlebacher used dealloying technology to successfully prepare a gold nanoporous network structure with a size of about 40nm and a relative density of 30%. According to the pore size distribution, nanoporous materials can be divided into micropores (pore diameter less than 2nm), mesopores (2-50nm), and macropores (greater than 50nm). Due to the porosity of the material endows the original material with new and excellent properties and expands the application range of the material, the low density, high specific surface area, low thermal ...

Claims

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Application Information

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IPC IPC(8): C22C1/08B01J21/02B01J35/10
CPCC22C1/08B01J21/02B01J35/647
Inventor 张耀陈岗
Owner SOUTHEAST UNIV
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