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Imidazole functionalized covalent triazine framework material as well as preparation method and application thereof

A technology of covalent triazine and framework material, applied in chemical instruments and methods, preparation of carbon dioxide or inorganic carbonate, catalytic reaction, etc., can solve problems such as poor catalytic performance, and achieve the effect of simple synthesis process

Active Publication Date: 2020-06-16
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above covalent triazine framework materials are used to adsorb CO 2 , photocatalytic CO 2 Reduction to CO or adsorption of heavy metals, but poor catalytic performance for the cycloaddition reaction of carbon dioxide and epichlorohydrin

Method used

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  • Imidazole functionalized covalent triazine framework material as well as preparation method and application thereof
  • Imidazole functionalized covalent triazine framework material as well as preparation method and application thereof
  • Imidazole functionalized covalent triazine framework material as well as preparation method and application thereof

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preparation example Construction

[0032] The present invention provides the preparation method of the imidazole-functionalized covalent triazine frame material described in the technical scheme, comprising the following steps:

[0033] Mix the covalent triazine framework, N,N'-carbonyldiimidazole and furan organic solvent for addition reaction to obtain imidazole functionalized covalent triazine framework material;

[0034] The repeating structural unit having the structure shown in formula II of the covalent triazine framework:

[0035]

[0036] In Formula II, the wavy line represents a repeating basic unit.

[0037] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0038] In the present invention, the preparation method of the covalent triazine framework (CTF) at room temperature preferably includes the following steps: mixing p-phenylenediamine, inorganic alkaline reagent, water, cyanuric chlori...

Embodiment 1

[0057] P-phenylenediamine (0.81g), sodium carbonate (0.3175g) and deionized water (10mL) were mixed to obtain a p-phenylenediamine solution; cyanuric chloride (0.3688g) and acetone (25mL) were mixed to obtain three Polycyanuric chloride solution: adding the p-phenylenediamine solution dropwise to the cyanuric chloride solution, reacting at room temperature for 8 hours, then suction-filtering the obtained reaction system, washing the obtained solid product with water three times, acetone Washed 3 times and washed 3 times with methanol, placed in a vacuum drying oven at 90° C. for 10 h in vacuum to obtain a covalent triazine framework (CTF).

[0058] A covalent triazine framework (0.75 g) was mixed with THF (25 mL) to obtain a covalent triazine framework solution; N,N'-carbonyldiimidazole (1.6215 g) was mixed with THF (20 mL) to obtain N,N' -carbonyldiimidazole solution; mix the covalent triazine framework solution and N,N'-carbonyldiimidazole solution, reflux reaction at 65°C f...

Embodiment 2

[0064] P-phenylenediamine (0.324g), sodium carbonate (0.3175g) and deionized water (10mL) were mixed to obtain a p-phenylenediamine solution; cyanuric chloride (0.3688g) and acetone (20mL) were mixed to obtain three Polycyanuric chloride solution: adding the p-phenylenediamine solution dropwise to the cyanuric chloride solution, reacting at room temperature for 12 hours, then suction-filtering the obtained reaction system, washing the obtained solid product with water three times, acetone Washed three times and washed three times with methanol, placed in a vacuum drying oven at 80° C. for 12 hours in vacuum to obtain a covalent triazine framework.

[0065] Mix the covalent triazine framework (0.75 g) and tetrahydrofuran (25 mL) to obtain a covalent triazine framework solution; mix N,N'-carbonyldiimidazole (1.2 g) and tetrahydrofuran (20 mL) to obtain N,N' -carbonyldiimidazole solution; mix the covalent triazine framework solution and N,N'-carbonyldiimidazole solution, reflux r...

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Abstract

The invention provides an imidazole functionalized covalent triazine framework material as well as a preparation method and application thereof, and belongs to the technical field of catalysts. The imidazole functionalized covalent triazine framework material provided by the invention has a repetitive structural unit with a structure represented by a formula I, a covalent triazine framework contains rich nitrogen, and a mesoporous structure of the covalent triazine framework material is beneficial to diffusion of a substrate and gives full play to the effect of an active site. Without the assistance of a cocatalyst, when a cycloaddition reaction of carbon dioxide and epoxy chloropropane is catalyzed by only taking the covalent triazine framework as a catalyst, the epoxy chloropropane is difficult to open a ring, and the catalytic effect is not obvious. An imidazole group is introduced into the imidazole functionalized covalent triazine framework material provided by the invention; theimidazole group has a certain nucleophilic ability, can attack epoxide to cause ring opening of the epoxide, can activate carbon dioxide, and can realize efficient catalysis of the cycloaddition reaction of carbon dioxide and epoxy chloropropane without adding other cocatalysts.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to an imidazole-functionalized covalent triazine framework material and a preparation method and application thereof. Background technique [0002] Covalent triazine framework material (CTF) is a new class of porous organic materials developed in recent years. Due to the advantages of large specific surface area, uniform porous structure and stable chemical structure, this material is widely used in gas Storage and separation, adsorption, catalysis and other technical fields. For example, Document 1 (Arindam Modak, Malay Pramanik, Shinji Inagaki and Asim Bhaumik, J.Mater.Chem.A, 2014, 2, 11642-11650.) discloses a novel triazine functionalized porphyrin-based porous organic polymer TPOP -1, is in FeCl 3 The hydrothermal reaction of 4,4′,4′-(1,3,5-triazine-2,4,6-triphenyl)tri(oxy)benzaldehyde and pyrrole in glacial acetic acid in the presence of Covalent triazine framework materi...

Claims

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Application Information

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IPC IPC(8): C08G73/02B01J31/06C07C69/96C07C68/04
CPCC08G73/0273B01J31/064C07C68/04B01J2231/49C07C69/96Y02P20/141
Inventor 代威力毛培李兵张书渠杨丽霞罗胜联罗旭彪邹建
Owner NANCHANG HANGKONG UNIVERSITY
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