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Copper-based metal-organic framework porous material and preparation method and application thereof

A technology of metal-organic frameworks and porous materials, applied in the fields of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve problems such as high cost, secondary environmental pollution, and high toxicity, and achieve reaction Fast, energy-saving, easy-to-operate results

Inactive Publication Date: 2014-11-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solvents for the activation of MOFs reported in the existing literature are mainly organic solvents such as dimethylformamide (DMF), diethylformamide (DEF), methanol, and chloroform. cause secondary pollution

Method used

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  • Copper-based metal-organic framework porous material and preparation method and application thereof
  • Copper-based metal-organic framework porous material and preparation method and application thereof
  • Copper-based metal-organic framework porous material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A copper-based-metal organic framework porous material, the preparation method of which is:

[0039] Weigh 2.416g of copper acetate and 1.620g of trimesic acid into an 80mL stainless steel ball mill jar, add four Ф10mm stainless steel ball mill beads, put them into a QM-3C high-speed vibrating ball mill, and then set the speed of the ball mill to 1100r / min (44.73Hz), ball milled for 30min to obtain a blue solid powder; the blue solid powder was washed 3 times with an aqueous solution of ethanol (volume ratio of ethanol to water: 1:1), soaked in ethanol three times, and replaced with fresh one every 8h. centrifuged at 5000r / min for 6min, and vacuum-dried the lower layer product at 150°C for 6h to obtain a blue-purple powder, which is the copper-based metal-organic framework porous material of the present invention.

Embodiment 2

[0041] A copper-based-metal organic framework porous material, the preparation method of which is:

[0042] Weigh 1.916g of copper acetate and 1.820g of trimesic acid, put them in an 80mL stainless steel ball mill jar, add three Ф10mm stainless steel ball mill beads, put them into a QM-3C high-speed vibrating ball mill, and then set the speed of the ball mill to 900r / min (36.60Hz), ball milled for 60min to obtain a blue solid powder; the blue solid powder was washed 3 times with an aqueous solution of ethanol (the volume ratio of ethanol to water was 1.5:1), soaked in ethanol three times, and replaced with a fresh one every 10 hours. Ethanol, centrifuged at 7000r / min for 5min, and vacuum-dried the lower layer product at 180°C for 5h to obtain a blue-purple powder, which is the copper-based metal-organic framework porous material of the present invention.

Embodiment 3

[0044] A copper-based-metal organic framework porous material, the preparation method of which is:

[0045] Weigh 2.509g of copper acetate and 1.260g of trimesic acid, put them in an 80mL stainless steel ball mill jar, add five Ф10mm stainless steel ball mill beads, put them into a QM-3C high-speed vibrating ball mill, and then set the speed of the ball mill to 1200r / min (48.82Hz), ball milled for 40min to obtain a blue solid powder; the blue solid powder was washed twice with an aqueous solution of ethanol (volume ratio of ethanol to water: 2:1), soaked in ethanol three times, and replaced with a fresh one every 6h. Ethanol was centrifuged at 4000r / min for 10min, and the lower product was vacuum-dried at 140°C for 8h to obtain a blue-purple powder, which was the copper-based metal-organic framework porous material of the present invention.

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Abstract

The invention belongs to the technical field of metal-organic framework materials and discloses a copper-based metal-organic framework porous material and a preparation method and application of the copper-based metal-organic framework porous material. The preparation method comprises the following steps that copper acetate and 1,3,5-benzene tricarboxylic acid are mixed evenly and then subjected to ball milling; the mixture is washed 2-3 times with ethanol water and then is soaked, centrifuged and dried, and finally the copper-based metal-organic framework porous material is obtained. By means of the preparation method, solvents do not need to be added in the reaction process, the reaction is quick, operation is simple, and the organic solvents which are cheap and easy to get are adopted as exchange solvents in the activation process, so the preparation method is a novel efficient and economical green synthesis method. The copper-based metal-organic framework porous material obtained through the preparation method has a large specific surface area and high porosity, can well adsorb volatile organic compounds and has higher adsorbing capacity to methanol than activated carbon, zeolite and other traditional adsorbing agents on the same conditions, the adsorbing capacity of the copper-based metal-organic framework porous material is about twice that of a metal-organic framework material HKUST-1 prepared through a hydrothermal synthesis method.

Description

technical field [0001] The invention belongs to the technical field of metal organic framework materials, and in particular relates to a copper-based-metal organic framework porous material and its preparation method and application. Background technique [0002] Metal Organic Frameworks (MOFs for short) are mainly composed of multi-dentate organic ligands containing oxygen and nitrogen (mostly aromatic polyacids and polybasics), which are formed by self-assembly of coordination bonds and metal ions. Polymers, because of their high porosity, large specific surface area, good thermal stability, adjustable pore size design and other advantages that traditional porous materials do not have, are widely used in gas adsorption separation or storage, selectivity and chiral catalysis and chemical sensors. and many other fields show attractive potential application prospects. As a new family of porous materials, MOFs materials, the research on the preparation and activation technolo...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30
Inventor 夏启斌李玉洁苗晋朋孙雪娇李忠奚红霞
Owner SOUTH CHINA UNIV OF TECH
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