Electrochemical CO₂ Reduction to CO
CO2 + 2H+ + 2e− → CO + H2O
概述
Electrochemical reduction of CO₂ at a metal cathode can selectively produce CO (on Au/Ag), formate (on Sn/Pb/Bi), or hydrocarbons (on Cu). CO + H₂ (syngas) can then be converted to fuels via Fischer-Tropsch synthesis. This carbon capture and utilization (CCU) approach could close the carbon cycle using renewable electricity.
参与者
| 角色 | 物质 | 系数 | 状态 |
|---|---|---|---|
| 反应物 | Carbon Dioxide CO₂ | 1 | (g) |
| 产物 | Carbon Monoxide CO | 1 | (g) |
| 产物 | Water H₂O | 1 | (l) |
日常示例
Startups like Twelve (formerly Opus 12) use CO₂ electrolysis to produce jet fuel and chemicals from captured carbon dioxide.
工业重要性
CO₂电化学还原是碳捕获与利用领域的研究热点，可将CO₂转化为合成气（CO+H₂）用于费托合成，生产化学品和燃料，实现碳循环利用。
属性
- 可逆
- 是
- 能量
- 吸热
- ΔH
- 257.0 kJ/mol
- 催化剂
- Gold or silver catalyst
相关反应
Electrorefining of Copper
Alkaline Battery Discharge
Anodizing of Aluminum
Chlor-Alkali Electrolysis
Nickel-Metal Hydride Battery
Daniell Cell (Zinc-Copper Galvanic Cell)
Electrolysis of Molten NaCl (Downs Process)
Lead-Acid Battery Discharge
Hall-Héroult Process (Aluminum Smelting)
Electrolysis of Water
Frequently Asked Questions
What is the equation for Electrochemical CO₂ Reduction to CO?
The balanced equation is: CO₂ + 2H⁺ + 2e⁻ → CO + H₂O.
What type of reaction is Electrochemical CO₂ Reduction to CO?
Electrochemical CO₂ Reduction to CO is a electrochemical reaction. It is reversible under certain conditions.
Is Electrochemical CO₂ Reduction to CO exothermic or endothermic?
Electrochemical CO₂ Reduction to CO is endothermic (absorbs energy). The enthalpy change (ΔH) is 257.0 kJ/mol.
What conditions are needed for Electrochemical CO₂ Reduction to CO?
This reaction requires a catalyst (Gold or silver catalyst).