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Porous alumina ceramic supported cu-mof adsorbent and preparation method thereof

A porous alumina and ceramic loading technology, which is applied in ceramic products, chemical instruments and methods, and other chemical processes, can solve the problem of no loading of MOF materials, achieve the effect of overcoming low strength, high permeability, and improving adsorption performance

Inactive Publication Date: 2019-03-19
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the prior art has studied the composite technology of MOF materials, there is no research on loading MOF materials on porous alumina ceramic supports.

Method used

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  • Porous alumina ceramic supported cu-mof adsorbent and preparation method thereof
  • Porous alumina ceramic supported cu-mof adsorbent and preparation method thereof
  • Porous alumina ceramic supported cu-mof adsorbent and preparation method thereof

Examples

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Embodiment 1

[0046] This embodiment provides a method for preparing a porous alumina ceramic loaded Cu-MOF adsorbent, which includes the following steps:

[0047] (1) Preparation of porous alumina ceramic carrier

[0048] Mix 10g of alumina powder, 0.3g of sodium polyacrylamide, 34.6mL of camphene, and 5.19mL of ethanol into a flask and mix and stir in an oil bath at 70°C for 12 hours to obtain a uniformly mixed ceramic slurry;

[0049] Inject the ceramic slurry into the forming mold and let it stand for 1 hour, take it out from the mold after solidification, and obtain the alumina ceramic green body;

[0050] Place the demolded alumina ceramic green body at -16°C for 24h, then put it into a vacuum freeze dryer at -40°C, dry it under reduced pressure at 100μHg for 12h, take it out, and finally dry it at 4°C / min The temperature is raised at a certain speed for high-temperature sintering, and the temperature is raised to 1600 ° C, kept for 3 hours, and the porous alumina ceramic carrier is ...

Embodiment 2

[0062] This embodiment provides a method for preparing a porous alumina ceramic loaded Cu-MOF adsorbent, which includes the following steps:

[0063] (1) The preparation process of the porous alumina ceramic carrier is the same as in Example 1;

[0064] (2) In situ synthesis of Cu-MOF

[0065] Take 0.84g of trimesic acid, add it to 50mL of ethanol solution with a mass fraction of 95%, and use it as a ligand solution;

[0066] Soak the prepared porous alumina ceramic carrier in the ligand solution for 5h;

[0067] Weigh 1.90g copper nitrate trihydrate and dissolve in 50mL ethanol solution to obtain copper nitrate solution;

[0068] Filter the soaked alumina ceramic carrier and put it into the copper nitrate solution, react in an oil bath at 80°C under condensing and reflux conditions for 22h, filter, and dry (the drying temperature is 100°C, and the drying time is 2-12h) After obtaining Cu-MOF-Al 2 o 3 Adsorbent.

[0069] The loading of Cu-MOF in this adsorbent is 7.2wt%....

Embodiment 3

[0073] This embodiment provides a method for preparing a porous alumina ceramic loaded Cu-MOF adsorbent, which includes the following steps:

[0074] (1) Preparation of porous alumina ceramic carrier

[0075] 10g alumina powder, 0.5g ZrO 2 Sintering aid, 0.3g sodium polyacrylate, 34.6mL camphene, 5.19mL tert-butanol were mixed and put into a flask, mixed and stirred in an oil bath at 70°C for 12 hours to obtain a uniformly mixed ceramic slurry;

[0076] Inject the ceramic slurry into the forming mold and let it stand for 1 hour, take it out from the mold after solidification, and obtain the ceramic green body;

[0077] Place the demolded alumina ceramic green body at -16°C (freeze in the refrigerator) for 24h, then put it into a vacuum freeze dryer at -40°C, dry it under reduced pressure at 100μHg for 12h, and then take it out , and finally the temperature was raised at a rate of 4°C / min for high-temperature sintering, the temperature was raised to 1500°C, kept for 3 hours, ...

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Abstract

The invention provides a porous alumina ceramic supported Cu-MOF adsorbent and a preparation method thereof. The preparation method includes mixing organic ligands for synthesizing Cu-MOF with a solvent to obtain an organic ligand solution; placing a porous alumina ceramic carrier impregnated with the organic ligand solution in a copper source solution to obtain a reaction system; Place it in an oil bath to perform a condensation reflux reaction. After the reaction is completed, filter, wash, and dry to obtain a porous alumina ceramic supported Cu-MOF adsorbent; wherein, the copper source solution is obtained by dissolving the copper source in an ethanol solution. The porous alumina ceramic supported Cu-MOF adsorbent provided by the present invention has good liquid phase adsorption performance.

Description

technical field [0001] The invention relates to a Cu-MOF adsorbent loaded on porous alumina ceramics and a preparation method thereof, belonging to the technical field of organic-inorganic porous composite materials and preparation methods thereof. Background technique [0002] Metal-organic framework (MOF) is a new type of porous material with broad application prospects. It is assembled by metal ions and organic ligands, and has a regular pore structure, high specific surface area, large porosity and low Therefore, MOF has become one of the research hotspots and frontiers in the current material field, and has shown potential application prospects in the fields of gas storage, adsorption separation, photoelectrocatalysis, ion exchange, biological activity, and molecular recognition. [0003] As a typical Cu-MOF material, HKUST-1 was first reported in Science by Chui et al. of Hong Kong University of Science and Technology (S.S.Y.Chui, S.M.F.Lo, J.P.H.Charmant, A.G.Orpen, I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30C04B38/00C04B35/10
CPCB01J20/08B01J20/226C04B35/10C04B38/00B01J20/30B01J20/3236B01J20/3204
Inventor 高伟张瑛常青贾小兰杨硕张玉龙
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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