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Method for quickly synthesizing metal organic framework material MIL-101

A metal-organic framework and fast technology, applied in the field of polymer materials, can solve problems such as crystal damage, achieve low operating costs, low investment, and shorten synthesis time

Inactive Publication Date: 2014-10-08
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Crystals with high specific surface area can be obtained by adjusting the reaction time, but if the optimal reaction time is exceeded, the crystals will be damaged

Method used

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  • Method for quickly synthesizing metal organic framework material MIL-101
  • Method for quickly synthesizing metal organic framework material MIL-101
  • Method for quickly synthesizing metal organic framework material MIL-101

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 4.00g of chromium nitrate, 0.45ml of hydrofluoric acid with a mass concentration of 40%, and 1.66g of terephthalic acid into 48g of water, stir and mix, then add to a closed reaction kettle, and finally add 0.02g of carbon nanotubes, and react at 220°C for 2h . After the reaction was completed, the temperature was slowly lowered to room temperature, and then centrifuged. The solid obtained in the upper layer was washed with dimethylformamide and absolute ethanol, and vacuum-dried and activated at 150°C to obtain the metal-organic framework material MIL-101.

Embodiment 2

[0016] Add 4.00g of chromium nitrate, 0.23ml of hydrofluoric acid with a mass concentration of 40%, and 1.66g of terephthalic acid into 48g of water, stir and mix, then add to a closed reaction kettle, and finally add 0.8g of nano-carbon fibers, and react at 220°C for 0.5h . After the reaction was completed, the temperature was slowly lowered to room temperature, and then centrifuged. The solid obtained in the upper layer was washed with dimethylformamide and absolute ethanol, and vacuum-dried and activated at 150°C to obtain the metal-organic framework material MIL-101.

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Abstract

The invention discloses a method for quickly synthesizing a metal organic framework material MIL-101. The method comprises the following steps: adding chromic nitrate, hydrofluoric acid, terephthalic acid, de-ionized water and carbon nanotubes or carbon fibers into an airtight reaction kettle according to a certain ratio, and reacting at 220 DEG C for 0.5-2 hours; after the reaction is finished, slowly cooling to room temperature, then performing centrifugal separation to obtain upper-layer solid, flushing the upper-layer solid by adopting dimethylformamide and absolute ethanol, drying in vacuum and activating to obtain the metal organic framework material MIL-101. According to the method, the metal organic framework material MIL-101 is quickly synthesized under the induction effect of the carbon nanomaterial, the shortcoming of long preparation time of a conventional method is overcome, and quick controllable preparation of the metal organic framework material MIL-101 is realized. The method has the characteristics of low investment and low operating cost, has wide application prospect, and can create remarkable economic benefits.

Description

Technical field: [0001] The invention belongs to the field of polymer materials, in particular to a preparation method of a chromium-containing metal organic material, in particular to a method for rapidly synthesizing a metal organic framework material MIL-101. technical background: [0002] Metal-organic frameworks (MOFs) are a class of hybrid organic-inorganic supramolecular materials with high specific surface area, large pore volume, adjustable pore size and diverse framework structures. MOFs have both high crystallinity and strong metal-ligand interactions, and the presence of strong coordination bonds enhances their chemical and thermal stability. These properties make MOFs a new class of multifunctional materials. The pore structure of MOFs is different from that of traditional porous materials such as molecular sieves. In MOFs, there is no wall structure, and the delineation of their internal space is obtained by linkers, which construct the internal space like a s...

Claims

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Application Information

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IPC IPC(8): C07F11/00
Inventor 王胜强王庆赵良震刘轶男罗紫菡张光浩于宏兵
Owner NANKAI UNIV
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