Electroreduction carbon dioxide catalytic material as well as preparation and application thereof

A catalytic material, carbon dioxide technology, applied in the field of electrochemistry, can solve problems such as difficulty in industrial production, difficulty in catalyst preparation, low catalyst activity, etc., and achieve the effects of enhanced selectivity, improved catalytic stability, and simple synthesis methods

Pending Publication Date: 2020-06-05
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

CN104846393A uses Ag-containing electrodes to produce nearly 90% CO, but needs to add ionic liquids, resulting in greater pollution; CN104032324A uses polymetallic oxygen clusters as catalysts, and the preparation of catalysts is difficult, and the products are complex
This type of catalyst faces problems such as low activity, poor stability, and high price, making it difficult to apply to industrial production

Method used

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  • Electroreduction carbon dioxide catalytic material as well as preparation and application thereof
  • Electroreduction carbon dioxide catalytic material as well as preparation and application thereof
  • Electroreduction carbon dioxide catalytic material as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of carbon material catalyst precursor: Take 16g of melamine and 8g of cysteine, put them in a ball mill tank, and then perform ball milling on a ball mill with a ball milling speed of 100rpm / min and a ball milling time of 2h, and fully mix to obtain a catalytic material precursor.

Embodiment 2

[0030] An electroreduction of CO 2 Catalyst material, comprises carbon material, and described carbon material is synthesized by high-temperature carbonization method, and its preparation method is: get 16g melamine, 16g cysteine, put in the ball mill tank, then carry out ball mill on ball mill, ball mill speed 100rpm / min, the ball milling time is 2h, and the catalyst material precursor is obtained through thorough mixing. The precursor was transferred into a zirconia boat, then placed in a tube furnace, fed with Ar gas at a flow rate of 25 mL / min, raised to 300 °C at a rate of 5 °C / min and maintained for 1 h, and then heated at a rate of 2.5 °C / min Raise the temperature to 600°C and keep it for 2h, then raise the temperature to 1000°C at a rate of 2°C / min and keep it for 2h, and finally cool naturally, and take out the carbon material, which is the electroreduction of CO 2 The catalytic material, called GM1.

Embodiment 3

[0032] An electroreduction of CO 2 Catalyst material, comprises carbon material, and described carbon material is synthesized by high-temperature carbonization method, and its preparation method is: get 16g melamine, 8g cysteine, put in the ball mill pot, then carry out ball mill on ball mill, ball mill speed 100rpm / min, the ball milling time is 2h, and the catalyst material precursor is obtained through thorough mixing. The precursor was transferred into a zirconia boat, then placed in a tube furnace, fed with Ar gas at a flow rate of 25 mL / min, raised to 300 °C at a rate of 5 °C / min and maintained for 1 h, and then heated at a rate of 2.5 °C / min Raise the temperature to 600°C and keep it for 2h, then raise the temperature to 1000°C at a rate of 2°C / min and keep it for 2h, and finally cool naturally, and take out the carbon material, which is the electroreduction of CO 2 Catalytic material, called GM2.

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Abstract

The invention discloses a preparation method and application of a carbon material. The carbon material is obtained through high-temperature carbonization synthesis, and synthesis raw materials comprise melamine and amino acid. The structure of the material is nitrogen-doped graphene, and the material is applied to a carbon dioxide electrochemical reduction catalyst gas diffusion electrode. According to the invention, the CO2 electroreduction activity of the catalyst is significantly improved, the catalytic stability is improved, the hydrogen evolution reaction is effectively inhibited, and theselectivity of the product CO is enhanced.

Description

technical field [0001] The invention relates to an electrochemical reduction of CO 2 Catalyst and preparation method thereof, particularly relate to a kind of high-efficiency catalytic CO 2 A preparation method and application of a carbon material catalyst for preparing CO belong to the field of electrochemistry. Background technique [0002] CO 2 As a greenhouse gas, its rise has caused a series of environmental problems such as rising sea levels, droughts, floods, and extreme climates, seriously threatening the sustainable development of the earth. Recently, on how to reduce the global CO 2 , the scientists launched the CO 2 Research on capture, storage and transformation. As early as the beginning of the 20th century, people have already started to study CO 2 However, because carbon dioxide is chemically stable and almost inert, it needs high temperature, high pressure or catalysts to undergo chemical reactions, so its development is slow. [0003] Therefore, how t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J27/24C25B1/00C25B11/06C25B11/12
CPCB01J21/18B01J27/24B01J35/0033C25B1/00C25B11/051
Inventor 黄延强刘松樊斯斯
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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