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Preparation method of cyclic carbonate

A cyclocarbonate, dual-center technology, applied in the field of preparation of cyclocarbonate, can solve the problems of complex catalyst recovery, and achieve the effects of high-efficiency catalytic cycloaddition, high ligand concentration, and excellent swelling performance

Pending Publication Date: 2021-11-02
浙江理工大学龙港研究院有限公司
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Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a method for preparing cyclocarbonate, which solves the complex problem of catalyst recovery for existing cyclocarbonate synthesis, and utilizes a dual-center porous polymerization method containing metalloporphyrin and quaternary phosphonium sites The material is used as a catalyst to realize the combination and synergy of the two active centers at the molecular level, thereby efficiently converting carbon dioxide into cyclocarbonate

Method used

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  • Preparation method of cyclic carbonate
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Embodiment 1

[0030] 1. Synthesis of Dual Center Porous Polymers:

[0031] Step 1, 4-(Diphenylphosphino)styrene (Ph 2 PSt) synthesis;

[0032] Using 4-bromostyrene and diphenylphosphine chloride as raw materials to prepare 4-(diphenylphosphino)styrene; the details are as follows:

[0033] 4-Bromostyrene was purified by distillation under reduced pressure before use; magnesium powder (1.5g, 62.5mmol) was added to a 300ml three-necked round-bottomed flask, dried under vacuum, and dried under N 2 Tetrahydrofuran (50ml) was added under the atmosphere, then 4-bromostyrene (6.6075g, 36.1mmol) was added dropwise through a dropping funnel, after the dropwise addition, stirring was continued at room temperature for two hours, and diphenyl chloride was added by the same operation. Phosphine (6.6120 g, 30.3 mmol) was reacted at room temperature overnight. After the reaction was stopped, the solution was quenched with saturated aqueous ammonium chloride solution (200 ml), extracted with ethyl acetat...

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Abstract

The invention belongs to the technical field of materials, and particularly relates to a preparation method of cyclic carbonate, CO2 is catalyzed to be converted into cyclic carbonate by taking a double-center porous polymer as a catalyst, and the double-center porous polymer is a double-center heterogeneous porous catalyst of metalloporphyrin and quaternary phosphonium sites. According to the invention, the problem that the existing catalyst for cyclic carbonate synthesis is complex to recover is solved, the double-center porous polymer containing metalloporphyrin and quaternary phosphonium sites is used as the catalyst, and combination and synergy of two active centers on the molecular level are realized, so that carbon dioxide is efficiently converted into cyclic carbonate.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of a cyclic carbonate. Background technique [0002] With the massive consumption of fossil energy, CO 2 The large amount of emissions is considered a major factor in global warming and climate change. Although CO 2 Not good for environmental impact, but it is also an abundant, renewable, cheap, non-toxic C1 resource that can be converted into various high value-added industrial chemicals. due to CO 2 Due to their low reactivity and kinetic inertness, there are still many difficulties and challenges to convert them into industrial chemicals. Therefore, a large number of scientists are devoted to developing catalytic systems with significantly reduced activation barriers. [0003] CO 2 The C atoms in exist in the highest oxidation state, making CO 2 With very high thermodynamic stability and kinetic inertness, resulting in harsh reaction c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D317/36B01J31/22C08F8/42C08F212/34C08F212/32
CPCC07D317/36B01J31/183C08F8/42B01J2531/845C08F212/34C08F212/32
Inventor 熊玉兵王时婷周宁戴志锋
Owner 浙江理工大学龙港研究院有限公司
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