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CO2 catalytic conversion device and method

A technology for catalytic conversion, CO2, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problems of low reaction selectivity and conversion rate

Inactive Publication Date: 2015-03-11
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Currently, traditional CO 2 The method of synthesizing cyclic carbonates with epoxy compounds is to use a reactor to carry out batch reactions. During the reaction, solvents and cocatalysts need to be added. Among them, CO 2 It needs to be dissolved in epoxy compound first, and then react under the action of solid phase catalyst, the reaction selectivity and conversion rate are not high

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  • CO2 catalytic conversion device and method

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preparation example Construction

[0065] In the present invention, the catalyst for the catalytic reaction is preferably an activated carbon-supported ionic liquid catalyst; the activated carbon-supported ionic liquid catalyst includes a supported halogen anion-containing ionic liquid catalyst and a supported non-halogen anion-containing ionic liquid catalyst. In the present invention, the preparation method of the supported ionic liquid catalyst containing halogen anion preferably comprises the following steps:

[0066] The active carbon carrier is oxidized, silylated, imidazolized and halogenated sequentially to obtain a supported ionic liquid catalyst containing halogen anions.

[0067] In the present invention, the activated carbon support is sequentially oxidized, silanized, imidazolized and halogenated. The activated carbon carrier is preferably coconut shell activated carbon. The present invention has no special limitation on the source of the activated carbon carrier, and the above-mentioned commercia...

Embodiment 1

[0088] Preparation of supported halogen anion-containing ionic liquid catalyst Bmim / Br:

[0089] (1) Under the conditions of 105°C and nitrogen protection, reflux 3g of coconut shell activated carbon carrier oxidized by nitric acid and 0.32g of 3-chloropropyltrimethoxysilane in 100mL of toluene for 20h, then wash and filter with absolute ethanol, Vacuum drying at 70°C for 7 hours to obtain a silanized coconut shell activated carbon carrier.

[0090] (2) Under the condition of 105°C, reflux the above-mentioned silanized coconut shell activated carbon carrier and 0.11g imidazole in toluene for 7h, then wash with absolute ethanol, filter, and vacuum dry at 70°C for 7h to obtain imidazolized coconut shell Shell activated carbon carrier.

[0091] (3) At 105°C, 5 g of the imidazolized coconut shell activated carbon support and 0.34 g of brominated n-butane were refluxed in 100 mL of toluene for 4 h to obtain a supported halogen anion-containing ionic liquid catalyst Bmim / Br.

Embodiment 2

[0093] Preparation of supported halogen anion-containing ionic liquid catalyst Bmim-COOH / Br:

[0094] (1) Under the conditions of 105°C and nitrogen protection, reflux 3g of coconut shell activated carbon carrier oxidized by nitric acid and 0.32g of 3-chloropropyltrimethoxysilane in 100mL of toluene for 20h, then wash and filter with absolute ethanol, Vacuum drying at 70°C for 7 hours to obtain a silanized coconut shell activated carbon carrier.

[0095] (2) Under the condition of 105°C, reflux the above-mentioned silanized coconut shell activated carbon carrier and 0.11g imidazole in toluene for 7h, then wash with absolute ethanol, filter, and vacuum dry at 70°C for 7h to obtain imidazolized coconut shell Shell activated carbon carrier.

[0096] (3) At 105°C, 5 g of the imidazolized coconut shell activated carbon support and 0.34 g of bromobutyric acid were refluxed in 100 mL of toluene for 7 h to obtain a supported halogen anion-containing ionic liquid catalyst Bmim-COOH / Br...

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Abstract

The invention provides a CO2 catalytic conversion device and method. The device comprises a reaction device as well as a feeding pipeline and a discharging pipeline which are communicated with the reaction device respectively, wherein the feeding pipeline comprises a first feeding pipeline body and a second feeding pipeline body; an epoxide storage device, a first flow control device and a preheating device are sequentially arranged on the first feeding pipeline body; a CO2 storage device and a second flow control device are sequentially arranged on the second feeding pipeline body. According to the device, an epoxide is firstly preheated and vaporized by a preheating furnace, then the vaporized epoxide and CO2 have continuous feeding reactions under the effect of a solid catalyst, the gas-and-solid-phase reaction is realized, reactants are fully contacted with the catalyst, the reaction condition is mild, and meanwhile, solvents and promoters are not used. Experimental results indicate that the reaction shows the higher selectivity and the higher conversion rate, and continuous reactions can be performed.

Description

technical field [0001] The invention relates to the technical field of industrial catalysis, more specifically, relates to a catalytic conversion of CO 2 devices and methods. Background technique [0002] CO 2 Is one of the most important greenhouse gases, accounting for about 2 / 3 of the total greenhouse gases, along with CO 2 Emissions are increasing year by year, and the greenhouse effect of the atmosphere is also increasing, which has produced a series of extremely serious environmental problems such as global warming, which has attracted the attention of countries all over the world; at the same time, CO 2 It is also one of the most abundant C1 resources on the earth, with the advantages of large reserves, safety, non-toxicity, cheapness and easy availability. Therefore, CO 2 The rational use of resources is of great significance both in terms of environmental protection and economic and social benefits. [0003] CO 2 Synthesis of cyclic carbonates via insertion re...

Claims

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Application Information

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IPC IPC(8): B01J8/02B01J31/04B01J31/02C07D317/36
CPCB01J8/0278B01J8/02B01J2208/00752B01J2208/00893C07D317/36
Inventor 熊春荣丁春华张育莲姜宏
Owner HAINAN UNIVERSITY
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