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Porous alumina ceramic supporting Cu-MOF (Cu-metal organic framework) 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 MOF material loading, achieve the effect of overcoming low strength, low expansion coefficient, and improving utilization efficiency

Inactive Publication Date: 2017-01-04
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 supporting Cu-MOF (Cu-metal organic framework) adsorbent and preparation method thereof
  • Porous alumina ceramic supporting Cu-MOF (Cu-metal organic framework) adsorbent and preparation method thereof
  • Porous alumina ceramic supporting Cu-MOF (Cu-metal organic framework) adsorbent and preparation method thereof

Examples

Experimental program
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Embodiment 1

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

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

[0048] Mix 10g alumina powder, 0.3g sodium polyacrylate, 34.6mL camphene, and 5.19mL ethanol into a flask and mix and stir in a 70°C oil bath 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, and then take it out of the mold after solidification to obtain the alumina ceramic green body;

[0050] Place the demoulded alumina ceramic greenware at -16°C for 24h, then put it in a -40°C vacuum freeze dryer and dry it under a vacuum of 100μHg for 12h, then take it out, and finally take it out at 4°C / min High temperature sintering is carried out at the rate of heating, the temperature is increased to 1600°C, the temperature is kept for 3 hours, and the porous alumina ceramic carrier is obtained after...

Embodiment 2

[0062] This embodiment provides a method for preparing a porous alumina ceramic supported 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 0.84 g of trimesic acid and add it to 50 mL of 95% ethanol solution for use as a ligand solution;

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

[0067] Weigh 1.90g copper nitrate trihydrate and dissolve it 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 and condense and reflux for 22h, filter and dry (the drying temperature is 100°C, the drying time is 2-12h) Then get Cu-MOF-Al 2 O 3 Adsorbent.

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

[0070] Porous alumina ceramic supported Cu-MOF adsorbent ...

Embodiment 3

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

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

[0075] Add 10g alumina powder, 0.5g ZrO 2 Sintering aid, 0.3g sodium polyacrylate, 34.6mL camphene, and 5.19mL tert-butanol were mixed and put into a flask and 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, and take it out of the mold after solidification to obtain a ceramic green body;

[0077] Place the demoulded alumina ceramic greenware at -16°C (put it in the refrigerator to freeze) for 24h, then put it in a -40°C vacuum freeze dryer, dry under reduced pressure at 100μHg for 12h, and take it out Finally, the temperature is increased at a rate of 4°C / min for high-temperature sintering, the temperature is increased to 1500°C, the temperature is k...

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Abstract

The invention provides a porous alumina ceramic supporting Cu-MOF (Cu-metal organic framework) adsorbent and a preparation method thereof. The preparation method comprises steps as follows: organic ligands for synthesizing a Cu-MOF are mixed with a solvent, and an organic ligand solution is obtained; a porous alumina ceramic carrier impregnated with the organic ligand solution is put in a copper-source solution, and a reaction system is obtained; the reaction system is put in an oil bath and subjected to a reflux condensation reaction, after the reaction, the reaction system is filtered, washed and dried, and the porous alumina ceramic supporting Cu-MOF adsorbent is obtained; the copper-source solution is prepared from a copper source dissolved in an ethanol solution. The porous alumina ceramic supporting Cu-MOF adsorbent has better liquid phase adsorption performance.

Description

Technical field [0001] The invention relates to a porous alumina ceramic loaded Cu-MOF adsorbent and a preparation method thereof, and belongs to the technical field of organic-inorganic porous composite materials and preparation methods thereof. Background technique [0002] Metal organic framework material (MOF) is a new type of porous material with broad application prospects. It is assembled by metal ions and organic ligands. It has a regular pore structure, high specific surface area, large porosity and low Therefore, MOF has become one of the current research hotspots and frontiers in the field of materials, and has shown potential application prospects in the fields of gas storage, adsorption and separation, photoelectric catalysis, 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., Hong Kong University of Science and Technology (SSYChui, SMFLo, JPHCharmant, AGOrpen, ID Wil...

Claims

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Application Information

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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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