Electrochemical CO₂ Reduction to CO

CO2 + 2H+ + 2e− → CO + H2O

概要

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.

参加者

役割 物質 係数 状態
反応物 Carbon Dioxide CO₂ 1 (g)
生成物 Carbon Monoxide CO 1 (g)
生成物 Water H₂O 1 (l)

日常の例

Startups like Twelve (formerly Opus 12) use CO₂ electrolysis to produce jet fuel and chemicals from captured carbon dioxide.

産業上の重要性

電気化学的CO₂還元は炭素中立燃料や化学品の製造に向けて急速に発展している分野であり、電力-液体燃料変換や合成ガス代替として大きな可能性を持つ。

特性

タイプ
Electrochemical
可逆的
はい
エネルギー
吸熱性
ΔH
257.0 kJ/mol
触媒
Gold or silver catalyst

関連する反応

Electrolytic Production of Chlorate Electrorefining of Copper Alkaline Battery Discharge Anodizing of Aluminum Cathodic Protection (Zinc Sacrificial Anode) Chlor-Alkali Electrolysis Chrome Electroplating Nickel-Metal Hydride Battery Sodium-Sulfur Battery 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).