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Conjugated microporous polymer composite material and preparation method thereof, and adsorbent

A technology of conjugated micropores and composite materials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of lack of spatial structure conditions and driving forces, unfavorable porous structure, low heterogeneous catalytic activity, etc. The effect of solving bleed rate and catalytic efficiency, efficient polymerization rate, good universality

Active Publication Date: 2022-08-02
北京石墨烯技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the matrix material exists, CMP does not have the spatial structure conditions and driving force for compounding with the matrix material, and the compounding of CMP and the matrix material cannot be realized stably.
However, if a conventional heterogeneous palladium catalyst (such as palladium carbon) is used, on the one hand, the heterogeneous catalytic activity is low, and it is difficult to form CMP with a high degree of polymerization, which is not conducive to the formation of a porous structure; on the other hand, the heterogeneous catalyst is also difficult to Coupled with matrix material, cannot be made into a stable composite material

Method used

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  • Conjugated microporous polymer composite material and preparation method thereof, and adsorbent
  • Conjugated microporous polymer composite material and preparation method thereof, and adsorbent
  • Conjugated microporous polymer composite material and preparation method thereof, and adsorbent

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preparation example Construction

[0034] One aspect of the present invention relates to a preparation method of a conjugated microporous polymer composite material, which comprises the following steps:

[0035] providing a matrix material coated with the first dopamine layer;

[0036] Supporting palladium nanoparticles on the matrix material coated with the first dopamine layer to prepare a matrix material supporting palladium nanoparticles, wherein the particle size of the palladium nanoparticles is less than or equal to 5 nm;

[0037] After the dopamine secondary modification is performed on the matrix material supporting the palladium nanoparticles to form the second dopamine layer, heating is performed to prepare the dopamine secondary modified matrix material; and

[0038]The dopamine secondary modified matrix material is mixed with the first monomer, the second monomer and triphenylphosphine, and under the catalysis of palladium nanoparticles and triphenylphosphine, the first monomer and the second monom...

Embodiment 1

[0062] Example 1 CMP / magnetic Fe 3 O 4 Preparation of Microsphere Composites

[0063] 1) Prepare a tris buffer solution with a concentration of 10 mmol / L, and adjust the pH to 8.5 with dilute hydrochloric acid. Take 190 mL of the above buffer solution and add 0.5 g Fe 3 O 4 Microspheres, keep magnetic stirring. Take another 10 mL of the above buffer, add 0.2 g of dopamine hydrochloride to dissolve it, and then drop it into the above Fe-containing solution drop by drop. 3 O 4 In the reaction system of the microspheres, the reaction was continued to stir at room temperature for 2 h. After the reaction, the samples were separated with a magnet and washed with deionized water for three times to obtain dopamine-modified magnetic Fe 3 O 4 Microsphere material and stored in deionized water.

[0064] 2) Prepare 25 mL of potassium chloropalladite solution with a concentration of 10 mmol / L, and mix the dopamine-modified magnetic Fe prepared in step 1). 3 O 4 The microsphere ma...

Embodiment 2

[0067] Example 2 Preparation of CMP / PTFE Membrane Composite

[0068] 1) Prepare a tris buffer solution with a concentration of 10 mmol / L, and adjust the pH to 8.5 with dilute hydrochloric acid. Fix the 5 cm diameter PTFE filter membrane on the support and put it into the reaction vessel to keep it flat during the reaction process, add a sufficient amount of the above buffer solution, and maintain magnetic stirring to ensure that the filter membrane does not remain stable during the stirring process. The liquid level will be exposed, and the above reaction system will be evacuated to remove the air in the membrane channel. Take another appropriate amount of the above buffer, add dopamine hydrochloride to dissolve, and then drop it into the above reaction system dropwise, so that the concentration of dopamine hydrochloride in the reaction system is 0.5 g / L, and the reaction is stirred at room temperature and pressure for 2 h. After the reaction, the membrane sample was taken ou...

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Abstract

The invention relates to the technical field of composite materials, in particular to a conjugated microporous polymer composite material, a preparation method thereof, and an adsorbent. The preparation method of the conjugated microporous polymer composite material includes providing a matrix material coated with a first dopamine layer; supporting palladium nanoparticles on the matrix material coated with the first dopamine layer, and then performing dopamine secondary After modification to form the second dopamine layer, heating; the above-mentioned matrix material is mixed with the first monomer, the second monomer and triphenylphosphine, and under the catalysis of palladium nanoparticles and triphenylphosphine, the first A monomer and a second monomer undergo a coupling reaction of Hagihara to form a CMP layer on the base material. The first monomer is an aromatic hydrocarbon substituted by a non-fluorine halogen element, and the second monomer is an alkynyl group or a boronic acid. substituted aromatic hydrocarbons. In the CMP composite material provided by the present invention, the CMP can be composited with any matrix material.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a conjugated microporous polymer composite material, a preparation method thereof, and an adsorbent. Background technique [0002] Conjugated microporous polymer (CMP) is a kind of random microporous network polymer with π-conjugation effect throughout the whole molecule in the molecular system. It usually consists of rigid organic monomers through a coupling reaction of carbon-carbon bonds catalyzed by organometallic catalysts to form a rigid conjugated system in which carbon-carbon single bonds and multiple bonds (or conjugated aromatic rings) are alternately connected. CMP not only has unique electrical properties and excellent porous properties, but also the good controllability brought by its coupling reaction and the designability brought by various polymerized monomers also make it show excellent application potential in various fields. , such as adsorption se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30
CPCB01J20/0225B01J20/264B01J20/265
Inventor 李佳惠郁博轩闫灏曹振李季李炯利王旭东
Owner 北京石墨烯技术研究院有限公司
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