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Ionic liquid catalyst and preparing method of ionic liquid catalyst

A technology of ionic liquid and catalyst, which is applied in the field of new catalytic materials and its preparation, can solve problems such as high energy consumption, and achieve the effects of simple equipment, simple preparation method and high selectivity

Inactive Publication Date: 2014-08-27
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, as a key step in artificial photosynthesis—CO 2 However, the electrochemical reduction process has been hindered by high overpotential, which is necessary to drive the reduction process, and high overpotential means high energy consumption.

Method used

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  • Ionic liquid catalyst and preparing method of ionic liquid catalyst

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Experimental program
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Effect test

Embodiment 1

[0017] (1) Add 1.2 moles of 1-cyanoethylimidazole and 1.0 moles of 2-chlorodiethylene glycol methyl ether into the reaction kettle, stir at room temperature for 30 minutes, fully mix the raw materials, and raise the temperature to 80°C at a rate of 10°C / min , stirred and reacted at a constant temperature of 80°C for 24 hours, cooled to room temperature, extracted three times with an equal volume of cyclohexane to remove excess 1-cyanoethylimidazole and unreacted 2-chlorodiethylene glycol methyl ether, and further heated at 60°C Vacuum drying for 24 hours gave the intermediate product 1-cyanoethyl-3-(3,6-dioxoheptyl)imidazolium chloride salt;

[0018] (2) Add 1.0 moles of 1-cyanoethyl-3-(3,6-dioxoheptyl) imidazolium chloride salt, 1.5 moles of potassium tetracyanoborate and an equal volume of anhydrous acetone into the reaction kettle, and stir at 25°C React for 48 hours, stop the reaction, filter to remove potassium chloride and excess potassium tetracyanoborate, and vacuum-dr...

Embodiment 2

[0020] (1) Add 1.2 moles of 1-cyanoethylimidazole and 1.0 moles of 2-chlorodiethylene glycol methyl ether into the reaction kettle, stir at room temperature for 30 minutes, fully mix the raw materials, and raise the temperature to 80°C at a rate of 10°C / min , stirred and reacted at a constant temperature of 80°C for 36 hours, lowered to room temperature, extracted 4 times with an equal volume of cyclohexane to remove excess 1-cyanoethylimidazole and unreacted 2-chlorodiethylene glycol methyl ether, and further heated at 60°C Vacuum drying for 24 hours gave the intermediate product 1-cyanoethyl-3-(3,6-dioxoheptyl)imidazolium chloride salt;

[0021] (2) Add 1.0 moles of 1-cyanoethyl-3-(3,6-dioxoheptyl) imidazolium chloride salt, 1.5 moles of potassium tetracyanoborate and an equal volume of anhydrous acetone into the reaction kettle, and stir at 25°C React for 48 hours, stop the reaction, filter to remove potassium chloride and excess potassium tetracyanoborate, and vacuum-dry t...

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Abstract

The invention relates to an ionic liquid catalyst and a preparing method of the ionic liquid catalyst. The ionic liquid catalyst has a chemical formula shown as a formula (I). The preparing method of the ionic liquid catalyst comprises the following steps that: (1) an intermediate product of 1-cyanoethyl-3-(3,6-dioxaheptyl)imidazolium chloride is prepared through electrophilic addition of cyanoethylated imidazole and chlorinated diethylene glycol monomethyl ether; and (2) the ionic liquid catalyst provided by the invention can be prepared through a replacement reaction of the 1-cyanoethyl-3-(3,6-dioxaheptyl)imidazolium chloride and potassium tetracyanoborate. The ionic liquid catalyst can be used for preparing methanol through CO2 electrocatalytic reduction, and has the characteristics of low overpotential and high selectivity.

Description

technical field [0001] The invention relates to a catalyst and a preparation method thereof, in particular to an ionic liquid catalyst and a preparation method thereof, and belongs to the technical field of novel catalytic materials and preparation thereof. Background technique [0002] Development is the eternal theme of our country, and sustainable development is the goal that our country is committed to pursuing. As a driving force, fossil energy promotes the rapid development of my country's economy and society, and has become an indispensable basic factor for the development of modern society. While promoting economic and social development, fossil energy also produces a large amount of greenhouse gases, especially carbon dioxide (CO 2 ). With the continuous increase in the consumption of fossil energy such as coal and oil, problems such as "climate warming" and "ecosystem deterioration" caused by the intensification of greenhouse gas emissions are seriously threa...

Claims

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Application Information

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IPC IPC(8): B01J31/02C07D233/60C25B3/04C25B11/06C25B3/25
Inventor 徐海涛徐玉韬欧阳伟周强魏壮壮
Owner NANCHANG HANGKONG UNIVERSITY
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