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Covalent organic frameworks-supported cobalt catalyst and preparation and application thereof

A technology of covalent organic frameworks and cobalt catalysts, which is applied in organic compound/hydride/coordination complex catalysts, organic chemistry, physical/chemical process catalysts, etc., can solve the problems of limiting the application of catalysts, and achieve scalable, Promote the effect of smooth progress and high added value of products

Active Publication Date: 2017-12-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the conditions for most catalysts to catalyze this reaction require high temperature and pressure, which greatly limits the application of these catalysts

Method used

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  • Covalent organic frameworks-supported cobalt catalyst and preparation and application thereof
  • Covalent organic frameworks-supported cobalt catalyst and preparation and application thereof
  • Covalent organic frameworks-supported cobalt catalyst and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1: Synthesis of Co(II)@TF-TA COF: Add Co(II)TAPP (36.6mg, 0.05mmol) and TFPPy (30.9mg, 0.05mmol) powders to a 10mL ampoule, and then add the mixed solvent 1,4-dioxane / mesitylene / N,N'-dimethylacetamide / 3mmol / L acetic acid solution (0.7mL / 0.7mL / 0.5mL / 0.1mL), sonicate the ampoule after addition The powder is fully dispersed and dissolved in the solvent. Put the ampoule into liquid nitrogen to freeze the solvent into a solid, and seal the mouth of the ampoule under vacuum (~20Pa). Afterwards, the ampoule was placed in an oven at 140° C. for a static reaction for 3 days. The obtained solid powder was washed with acetone and filtered until the solvent was colorless, and dried at 100°C for 12 hours to obtain a brown solid powder Co(II)@TF-TACOF with a yield of 85%.

[0024] The second step: Co(II)@TF-TA COF is used as a heterogeneous catalyst to catalyze the reaction of carbon dioxide and epichlorohydrin to generate cyclocarbonate compounds. Under normal temperature an...

Embodiment 2-5

[0026]The Co(II)@TF-TA COF obtained in Example 1 was used as a heterogeneous catalyst to catalyze the reaction of carbon dioxide and epichlorohydrin to form a cyclocarbonate compound. The catalytic performance did not decrease significantly after being recycled for 4 times. According to Table 1 Described, other preparation, reaction, test conditions, with embodiment 1.

[0027] Table 1

[0028]

Embodiment 6-8

[0030] Under the catalysis of Co(II)@TF-TA COF obtained in Example 1, the reaction of carbon dioxide and epichlorohydrin was catalyzed to generate cyclocarbonate compounds. Different cocatalysts showed high yields for the reaction, according to Described in table 2, other preparation, reaction, test conditions, with embodiment 1.

[0031] Table 2

[0032]

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PUM

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Abstract

The invention discloses preparation of a novel heterogenous catalyst Co (II) (at) TF-TA COF: covalent organic frameworks (COFs)-supported metallic cobalt is used for catalyzing carbon dioxide and an epoxy compound for synthesis of a cyclic carbonate compound. Structural unit of the material contains a cobalt-porphyrin compound which can be used for catalyzing a reaction between carbon dioxide and an epoxy compound. In addition, the COFs have large specific surface area and an open porous structure, which can enhance adsorption capacity of carbon dioxide. Thus, the Co (II) (at) TF-TA COF can simultaneously realize adsorption of carbon dioxide gas and catalytic conversion for generation of cyclic carbonates. The type of a reaction substrate is extensible; reaction yield is high; the catalyst can be recycled; operation is simple; and added value of a product is high.

Description

technical field [0001] The present invention relates to the preparation of a novel heterogeneous catalyst Co(II)@TF-TA COF: covalent organic framework (COFs) material loaded with metal cobalt is used (carbon dioxide adsorption and conversion) to catalyze the reaction of carbon dioxide and epoxy compounds to synthesize cyclocarbonic acid ester compounds. Background technique [0002] Carbon dioxide is a greenhouse gas. Finding a simple and convenient method to reduce the concentration and content of carbon dioxide in the environment has become an urgent problem for human beings to solve. Carbon dioxide and epoxy compounds can react under the catalysis of catalysts to form cyclocarbonate compounds, and cyclocarbonate is a high value-added chemical, which can be used in the fields of aprotic polar solvents, pharmaceuticals, fine chemical intermediates, etc. . So far, people have developed a variety of catalysts that can be used to catalyze this reaction, including: organic ca...

Claims

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Application Information

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IPC IPC(8): B01J31/22C07D317/36
CPCB01J31/1691B01J31/183B01J2531/025B01J2531/845C07D317/36Y02P20/584
Inventor 高艳安张健强冷文光王宇格日乐
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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