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Multi-room diaphragm electrolysis method and device for electroreduction of carbon dioxide into carbon monoxide

A carbon dioxide, carbon monoxide technology, applied in the electrolysis process, electrolysis components, cells, etc., can solve the problems of non-renewable fossil fuels, greenhouse gas effect, etc., achieve high electrochemical stability, promote migration, and reduce overpotential effects.

Active Publication Date: 2016-02-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, syngas is mainly produced by fossil fuels, but fossil fuels are non-renewable, and a large amount of carbon dioxide will be emitted during use, leading to greenhouse gas effects and global warming. Therefore, exploring non-fossil fuel sources Syngas production methods have become an important research topic

Method used

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  • Multi-room diaphragm electrolysis method and device for electroreduction of carbon dioxide into carbon monoxide
  • Multi-room diaphragm electrolysis method and device for electroreduction of carbon dioxide into carbon monoxide
  • Multi-room diaphragm electrolysis method and device for electroreduction of carbon dioxide into carbon monoxide

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Embodiment 1

[0042] A multi-chamber diaphragm electrolysis method for electroreducing carbon dioxide to carbon monoxide: use a perfluorosulfonic acid ion exchange membrane to separate the electrolytic cell into multiple electrode chambers to form a multi-chamber diaphragm electrolytic cell in which the cathode chamber and the anode chamber are arranged alternately. The liquid is an organic composite electrolyte dissolved in carbon dioxide. The electrolyte in the anode chamber is an aqueous solution containing a supporting electrolyte. The cathode adopts a metal electrode with high selectivity for the electrolysis of carbon dioxide to produce carbon monoxide. The anode is an inert electrode. During the electrolysis reaction, there is a Carbon monoxide is produced, and hydrogen is produced as a by-product.

[0043] The organic composite electrolyte contains four functional components: an organic solvent, an organic supporting electrolyte, a proton conduction enhancer and an electrocatalyst. ...

Embodiment 2

[0052] A multi-chamber diaphragm electrolysis method for electroreducing carbon dioxide to carbon monoxide: use a perfluorosulfonic acid ion exchange membrane to separate the electrolytic cell into multiple electrode chambers to form a multi-chamber diaphragm electrolytic cell in which the cathode chamber and the anode chamber are arranged alternately. The liquid is an organic composite electrolyte dissolved in carbon dioxide. The electrolyte in the anode chamber is an aqueous solution containing a supporting electrolyte. The cathode adopts a metal electrode with high selectivity for the electrolysis of carbon dioxide to prepare carbon monoxide. The anode is an inert electrode. During the electrolysis reaction, there is a Carbon monoxide is produced, and hydrogen is produced as a by-product.

[0053] The organic composite electrolyte contains four functional components: an organic solvent, an organic supporting electrolyte, a proton conduction enhancer and an electrocatalyst. ...

Embodiment 3

[0062] A multi-chamber diaphragm electrolysis method for electroreducing carbon dioxide to carbon monoxide: use a perfluorosulfonic acid ion exchange membrane to separate the electrolytic cell into multiple electrode chambers to form a multi-chamber diaphragm electrolytic cell in which the cathode chamber and the anode chamber are arranged alternately. The liquid is an organic composite electrolyte dissolved in carbon dioxide. The electrolyte in the anode chamber is an aqueous solution containing a supporting electrolyte. The cathode adopts a metal electrode with high selectivity for the electrolysis of carbon dioxide to prepare carbon monoxide. The anode is an inert electrode. During the electrolysis reaction, there is a Carbon monoxide is produced, and hydrogen is produced as a by-product.

[0063] The organic composite electrolyte contains four functional components: an organic solvent, an organic supporting electrolyte, a proton conduction enhancer and an electrocatalyst. ...

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Abstract

The invention relates to a multi-room diaphragm electrolysis method and device for electroreduction of carbon dioxide into carbon monoxide, and belongs to the technical field of carbon dioxide resource utilization. According to the multi-room diaphragm electrolysis method and device, an electrolytic tank is divided into a plurality of electrode rooms through a perfluoro sulfonated ion exchange membrane, and a multi-room diaphragm electrolytic tank with alternately-arranged cathode rooms and anode rooms is formed; a cathode electrolyte is an organic composite electrolyte dissolved with the carbon dioxide, and an anode electrolyte is a water solution containing a supporting electrolyte; a cathode is a metal electrode having high selectivity on carbon monoxide making through electrolysis of the carbon dioxide, and an anode is a noble electrode; and in the electrolytic reaction process, water has an oxidizing reaction with the anode to generate oxygen, the carbon dioxide has a reduction reaction with the cathode to generate the carbon monoxide. By means of the multi-room diaphragm electrolysis method and device, electroreduction of the carbon dioxide into the carbon monoxide can be efficiently and continuously carried out.

Description

technical field [0001] The invention relates to a multi-chamber diaphragm electrolysis method and device for electrically reducing carbon dioxide to carbon monoxide, and belongs to the technical field of carbon dioxide resource utilization. Background technique [0002] Converting carbon dioxide into useful chemicals and realizing the recycling of carbon resources is a practical problem that needs to be solved urgently in the field of energy and environment. Syngas is a widely used basic chemical raw material, and its main components are carbon monoxide and hydrogen. At present, syngas is mainly produced by fossil fuels, but fossil fuels are non-renewable, and a large amount of carbon dioxide will be emitted during use, leading to greenhouse gas effects and global warming. Therefore, exploring non-fossil fuel sources The production method of synthesis gas has become an important research topic. This invention uses carbon dioxide and water as raw materials to prepare synthe...

Claims

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Application Information

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IPC IPC(8): C25B1/00
CPCC25B1/00C25B1/04C25B9/73C25B9/70Y02E60/36
Inventor 施锦李青远沈风霞贾友见王琴杨冬伟李露胡玉琪
Owner KUNMING UNIV OF SCI & TECH
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