Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Catalysis electrode for preparing formic acid by electrocatalytic reduction of CO2, application and method for preparing formic acid by electrocatalytic reduction on CO2

A catalytic electrode, carbon dioxide technology, applied in the direction of electrode, electrolysis process, organic chemistry, etc., can solve the problems of copper element, unsatisfactory current efficiency, loss of catalytic activity, etc., to achieve the effect of simple steps, easy production and convenient operation

Inactive Publication Date: 2014-03-26
HUAZHONG NORMAL UNIV
View PDF4 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the Kanan group has studied copper nanoparticles obtained by reducing cuprous oxide (Journal of The Electrochemical Society 158 (2011) E45-E49), which can significantly improve the current efficiency of its electrocatalytic reduction of carbon dioxide to carbon monoxide and formic acid. improve; but cuprous oxide is easy to turn into simple copper under electrolytic conditions, so that it loses its catalytic activity
[0005]Tin dioxide is a special metal oxide with good electrical conductivity, and it can be used in the electrochemical reduction process of CO2 relatively stable, but the current efficiency of electrocatalytic reduction of carbon dioxide to formic acid reported so far is not ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalysis electrode for preparing formic acid by electrocatalytic reduction of CO2, application and method for preparing formic acid by electrocatalytic reduction on CO2
  • Catalysis electrode for preparing formic acid by electrocatalytic reduction of CO2, application and method for preparing formic acid by electrocatalytic reduction on CO2
  • Catalysis electrode for preparing formic acid by electrocatalytic reduction of CO2, application and method for preparing formic acid by electrocatalytic reduction on CO2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] For electrocatalytic reduction of CO 2 Preparation of the catalytic electrode to formic acid:

[0027] Step 1: Incorporate commercial SnO 2 Vacuum heat treatment was carried out for 4 hours, the vacuum pressure was 2 Pa, and the treatment temperature was 200 ° C to obtain tin dioxide containing oxygen vacancies (SnO 2 (V)), the XRD diagrams before and after treatment are shown in figure 1 , the electron paramagnetic resonance spectrum see figure 2 ,Depend on figure 2 It can be seen from the results that after the vacuum heat treatment of tin dioxide, the electron paramagnetic resonance signal is stronger, indicating that oxygen vacancy defects are generated on the surface;

[0028] Step 2: The treated tin dioxide containing oxygen vacancies (SnO 2 (V)) was ultrasonically mixed and dispersed with 0.1 wt% Nafion solution to obtain SnO 2 (V) suspension with a mass concentration of 2wt%, and then apply the dispersed suspension to the surface of a glassy carbon shee...

Embodiment 2

[0032] For electrocatalytic reduction of CO 2 Preparation of the catalytic electrode to formic acid:

[0033] Step 1: Incorporate the SnO 2 Vacuum heat treatment was carried out for 3 hours, the vacuum pressure was 8 Pa, and the treatment temperature was 300 °C to obtain tin dioxide (SnO2) containing oxygen vacancies. 2 (V));

[0034] Step 2: SnO (SnO2) containing oxygen vacancies 2 (V)) is ultrasonically mixed and dispersed with 0.3wt% Nafion solution to obtain SnO 2 (V) The mass concentration of the suspension is 5wt%. The dispersed suspension is coated on the surface of the glassy carbon sheet, and it can be used for electrocatalytic reduction of CO after drying. 2 to the catalytic electrode for formic acid.

[0035] A method for catalytically reducing carbon dioxide to formic acid using the catalytic electrode:

[0036]In an electrolytic cell separated by a proton exchange membrane into an anode tank and a cathode tank, the above-mentioned catalytic electrode is used...

Embodiment 3

[0039] For electrocatalytic reduction of CO 2 Preparation of the catalytic electrode to formic acid:

[0040] Step 1: Incorporate the SnO 2 Vacuum heat treatment was carried out for 2 h, the vacuum pressure was 10 Pa, and the treatment temperature was 400 ° C to obtain tin dioxide containing oxygen vacancies (SnO 2 (V));

[0041] Step 2: SnO (SnO2) containing oxygen vacancies 2 (V)) was ultrasonically mixed and dispersed with 0.5 wt% Nafion solution to obtain SnO 2 (V) is a suspension with a mass concentration of 3wt%, and the dispersed suspension is coated on the surface of a glassy carbon sheet, and it can be used for electrocatalytic reduction of CO after drying. 2 to the catalytic electrode for formic acid.

[0042] The method of using the catalytic electrode to catalytically reduce carbon dioxide to formic acid: In an electrolytic cell separated by a proton exchange membrane into an anode tank and a cathode tank, the above-mentioned catalytic electrode is used as the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a catalysis electrode for preparing formic acid by electrocatalytic reduction of CO2, application and a method for preparing formic acid by electrocatalytic reduction on CO2. The catalysis electrode for preparing formic acid by electrocatalytic reduction of CO2 comprises a glassy carbon sheet and a coating covering the glassy carbon sheet, wherein the material of the coating is stannic oxide containing oxygen vacancies, and the stannic oxide containing oxygen vacancies is obtained by performing vacuum thermal process on stannic oxide at 200-400 DEG C for 2-4 h. The catalysis electrode for preparing formic acid by electrocatalytic reduction of CO2 is applied to electrocatalytic reduction of CO2, and is capable of improving the rate and the current efficiency of preparing formic acid by electrocatalytic reduction of CO2. At the same electric potential, the rate of preparing formic acid by reducing CO2 by employing the catalysis electrode is increased by nearly 3 times compared with that by employing unprocessed catalysis electrodes, and the current efficiency is improved by nearly one time.

Description

technical field [0001] The invention relates to a method for electrocatalytic reduction of CO 2 Catalytic electrode to formic acid, application and method for electrocatalytic reduction of carbon dioxide to formic acid. Background technique [0002] Since the industrial revolution, the way of life and production of human society has undergone tremendous changes, and the demand and utilization of energy have increased day by day. At the same time, the problems of environment and energy depletion caused by the massive consumption of fossil fuels have become more and more serious. As the problem of global warming caused by the greenhouse effect becomes increasingly prominent, carbon dioxide, as a major greenhouse gas, has also received more and more attention. [0003] Under natural conditions, carbon dioxide in the atmosphere can be fixed through photosynthesis of plants and converted into sugars that can be used as energy substances, thereby completing the carbon cycle proce...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C25B3/04C25B11/06C07C53/02C25B3/25
Inventor 贾法龙张慧
Owner HUAZHONG NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com