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Ferrocene-based poly-Schiff base porous polymer, porous polymer material, preparation method and application

A porous polymer, polySchiff base technology, applied in chemical instruments and methods, separation methods, educts, etc., can solve the problems of poor pore size control ability, low adsorption capacity and adsorption capacity, and poor selectivity of porous materials. Large pore volume, simple steps, and the effect of increasing gas adsorption

Active Publication Date: 2017-08-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the pore size regulation ability of this porous material is poor, the adsorption capacity and adsorption capacity are relatively low, and the selectivity is relatively poor, which needs further improvement.

Method used

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  • Ferrocene-based poly-Schiff base porous polymer, porous polymer material, preparation method and application
  • Ferrocene-based poly-Schiff base porous polymer, porous polymer material, preparation method and application
  • Ferrocene-based poly-Schiff base porous polymer, porous polymer material, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0047] In a 50mL three-neck flask with magnetic stirring and reflux condenser, add melamine (0.2mol), diacetylferrocene (0.3mol) and DMSO in a molar ratio of 2:3 in sequence, and protect with nitrogen Under the condition of 150°C, the reaction was stirred and refluxed for 72 hours. The precipitate obtained after cooling the reaction liquid was collected by filtration and washed with water, then extracted by THF, acetone and methanol, and dried to obtain the product. After the sample is subjected to vacuum conditions (10kPa), the ferrocene-based poly-Schiff base porous polymer pore material FMAP-9 is obtained. Measure TGA and BET respectively, the specific surface area is 924m 2 / g, the average pore size is 3.27nm, the 5% thermal weight loss temperature under nitrogen is 465°C, the hydrogen loading is 1.9wt% (77K, 1bar), the methane loading is 6.0wt% (298K, 25bar), and the carbon dioxide adsorption capacity 15.0wt%, CO 2 / N 2 The selectivity is 78 (298K, 1 bar).

Embodiment 2

[0049] Under similar conditions as in Example 1, dipropionyl ferrocene (0.3mol) was selected to replace diacetyl ferrocene as a polymerization monomer, and the BET specific surface area of ​​the obtained ferrocene-based poly-Schiff base porous polymer porous material was 1162m 2 / g, the average pore size is 2.72nm, the 5% thermal weight loss temperature under nitrogen is 414°C, the hydrogen loading is 2.3wt% (77K, 1bar), the methane loading is 6.2wt% (298K, 25bar), and the carbon dioxide adsorption capacity 16.7wt%, CO 2 / N 2 The selectivity is 65 (298K, 1 bar).

Embodiment 3

[0051] Under similar conditions in Example 1, under similar conditions, select dibutyryl ferrocene (0.3mol) to replace diacetyl ferrocene as a polymerization monomer, and the BET ratio of the obtained ferrocene-based poly-Schiff base porous polymer pore material is Surface area is 1243m 2 / g, the average pore size is 2.13nm, the 5% thermal weight loss temperature under nitrogen is 407°C, the hydrogen loading is 2.3wt% (77K, 1bar), the methane loading is 6.7wt% (298K, 25bar), and the carbon dioxide adsorption capacity 18.2wt%, CO 2 / N 2 The selectivity is 92 (298K, 1 bar).

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Abstract

The invention discloses a ferrocene-based poly-Schiff base porous polymer, a porous polymer material, a preparation method and an application. The ferrocene-based poly-Schiff base porous polymer is obtained through a Schiff-base reaction of dialkyl acyl ferrocene compounds and triarylamine compounds or tetra-arylamine compounds. The pore sizes of the ferrocene-based poly-Schiff base porous polymer can be adjusted, and the ferrocene-based poly-Schiff base porous polymer material with high specific surface area, high pore volume and good chemical stability and heat stability is obtained through high-temperature vacuum activation, is widely applied to multiple fields such as gas adsorption and separation, photocatalysis, electrochemical energy storage, dye adsorption and decomposition and the like and particularly has good adsorption performance for CO2, CH4, H2, HCHO and other gas molecules. The preparation method is simple, convenient, feasible and suitable for industrial production.

Description

technical field [0001] The invention relates to a ferrocene-based poly-Schiff-base porous polymer, in particular to a ferrocene-based poly-Schiff-base porous polymer material and its preparation method and application, belonging to the field of functional polymer materials. Background technique [0002] In the case of environmental pollution and depletion of fossil fuels, it is imminent to develop new energy sources and control the greenhouse effect, so gas molecules such as H 2 storage, CO 2 The capture and transformation of spores are of great significance to the sustainable development of our country's economy. Using Nanoporous Materials to Adsorb Gas Molecule H 2 storage or CO 2 Separation and enrichment is one of the hottest topics in the field of materials, energy and environment research, and it has particularly important academic value and industrial application value. [0003] Polymer materials with nanoporous properties have broad application prospects in adsor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08G73/06B01J20/26B01D53/02
CPCB01D53/02B01J20/262C08G73/026C08G73/0266C08G73/0644Y02C20/20Y02C20/40Y02P20/151
Inventor 喻桂朋何建巧符宇潘春跃
Owner CENT SOUTH UNIV
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