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Multifunctional carbon molecular sieve derived from metal organic framework material/self-polymerized microporous polymer composite, and preparation method and application thereof

A metal-organic framework and microporous polymer technology, applied in alkali metal compounds, alkali metal oxides/hydroxides, separation methods, etc., can solve problems such as difficult to achieve high-efficiency separation, achieve good industrial application prospects, and high-efficiency separation , the effect of strong thermal stability and chemical stability

Active Publication Date: 2019-10-29
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a metal-organic framework material / self-polymerizing microporous polymer composite derived carbon molecular sieve in the field of inorganic-organic composite separation technology and its preparation method and application. The novel composite derived porous carbon molecular sieve solves the problem There are materials that are difficult to achieve efficient separation of gas molecules with close three-dimensional structure, molecular size and physical properties

Method used

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  • Multifunctional carbon molecular sieve derived from metal organic framework material/self-polymerized microporous polymer composite, and preparation method and application thereof
  • Multifunctional carbon molecular sieve derived from metal organic framework material/self-polymerized microporous polymer composite, and preparation method and application thereof
  • Multifunctional carbon molecular sieve derived from metal organic framework material/self-polymerized microporous polymer composite, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 metal-organic framework material CuBTC / self-porous polymer PIM-1 composite derived carbon molecular sieve

[0042] (1) Preparation of metal-organic framework material CuBTC:

[0043] First, 1.4496g Cu(NO 3 ) 2 ·3H 2O. 0.6303g of trimesic acid was completely dissolved in 100mL of N,N-dimethylformamide solution, stirred and mixed evenly at room temperature, then the mixture was placed in a hydrothermal reactor, and reacted at 100°C for 15h. The product obtained after the reaction was centrifuged and washed several times with ethanol until the supernatant was colorless. The blue gel-like product was vacuum-dried at 60°C to obtain a solid metal-organic framework CuBTC.

[0044] (2) Preparation of self-porous polymer PIM-1:

[0045] First, 34.0 g of 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-helical bisindane (TTSBI), 20.0 g of tetrafluoropara Diphthalonitrile (DCTB), 40.0g K 2 CO 3 The mixture was placed in 200mL DMAc and 100mL toluene solution, he...

Embodiment 2

[0051] Example 2 Metal-organic framework material CuBDC / self-porous polymer PIM-1 composite derived carbon molecular sieve

[0052] (1) Preparation of metal-organic framework material CuBDC:

[0053] First, 1.6534g Cu(NO 3 ) 2 ·3H 2 O. 0.9969g of terephthalic acid was completely dissolved in 100mL of N,N-dimethylformamide solution, stirred and mixed evenly at room temperature, then the mixture was placed in a hydrothermal reactor, and reacted at 80°C for 20h. The product obtained after the reaction was centrifuged and washed several times with ethanol until the supernatant was colorless. The blue gel-like product was vacuum-dried at 60° C. to obtain a solid metal-organic framework CuBDC.

[0054] (2) Preparation of self-porous polymer PIM-1:

[0055] First, 34.0 g of 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-helical bisindane (TTSBI), 20.0 g of tetrafluoropara Diphthalonitrile (DCTB), 40.0g K 2 CO 3 The mixture was placed in 200mL DMAc and 100mL toluene soluti...

Embodiment 3

[0072] Embodiment 3 gas adsorption separation performance test

[0073] The porous framework materials prepared in the above-mentioned Examples 1, 2 and Comparative Examples 1, 2 were tested for their performance against CO 2 and N 2 selectivity of adsorption separation. The performance of the synthesized porous adsorbent material was evaluated by calculating and analyzing the adsorption capacity of single-component gas.

[0074] Experimental procedure for adsorption separation of porous materials: the synthesized porous framework material was placed in a vacuum oven, and stood at 120° C. for 12 hours under vacuum conditions. The pretreated sample is sealed in the sample chamber of the device, and the device is evacuated to make the whole system in a vacuum state. After the whole system is stable, the gas to be tested is introduced. In a single-component gas system (such as CO 2 and N 2 ) in the adsorption separation test, the pressure gauge is used to measure the change ...

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Abstract

The invention provides a multifunctional carbon molecular sieve derived from a metal organic framework material / self-polymerized microporous polymer composite, and a preparation method and applicationthereof. According to the invention, the unique properties of metal organic frameworks (MOFs) and self-polymerized microporous polymers (PIMs) themselves are combined together to prepare a high-performance porous carbon molecular sieve adsorbent, and a porous structure with a uniform size and a stable structure and a large number of functionalized sites (such as N and S) generated in the derivation process of the composite are utilized for successfully realizing high-efficiency separation of gas molecules with close three-dimensional structures, molecular sizes and physical properties; at thesame time, high-temperature calcination endows the composite with strong thermal stability and chemical stability; so the multifunctional carbon molecular sieve shows good industrial application prospects in complex gas separation systems and solves the major problem that conventional materials are difficult to achieve high-efficiency separation of gas molecules with close three-dimensional structures, molecular sizes and physical properties.

Description

[0001] (1) Technical field [0002] The invention belongs to the technical field of separation of inorganic-organic composite porous framework materials, and in particular relates to a carbon molecular sieve derived from metal-organic framework materials / self-polymerized microporous polymer composites, a preparation method thereof, and an application in gas adsorption and separation. [0003] (2) Background technology [0004] Since the middle of the last century, the use of solid compound porous materials with regular pore structures for high-capacity adsorption, high-precision separation, and shape-selective catalysis has gradually become a hot spot in international research and development. Energy and other fields have been increasingly widely used. The essence of porous materials used in molecular sieving is that the pore size of the material can be equivalent to the molecular size of the substance to be separated, and at the same time there are other strong groups in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D53/02C01B32/05
CPCB01D53/02B01J20/226B01J20/26B01J20/28054C01B32/05
Inventor 张国亮秦磊李雄
Owner ZHEJIANG UNIV OF TECH
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