Electrochemical CO₂ Reduction to CO
CO2 + 2H+ + 2e− → CO + H2O
Visão geral
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.
Participantes
| Papel | Substância | Coeficiente | Estado |
|---|---|---|---|
| Reagente | Carbon Dioxide CO₂ | 1 | (g) |
| Produto | Carbon Monoxide CO | 1 | (g) |
| Produto | Water H₂O | 1 | (l) |
Exemplo do cotidiano
Startups like Twelve (formerly Opus 12) use CO₂ electrolysis to produce jet fuel and chemicals from captured carbon dioxide.
Importância industrial
A redução eletroquímica de CO₂ é um campo em rápido desenvolvimento com potencial para produzir combustíveis sintéticos e matérias-primas a partir de dióxido de carbono. Empresas como a Siemens e a Haldor Topsoe desenvolvem demonstradores comerciais.
Propriedades
- Tipo
- Electrochemical
- Reversível
- Sim
- Energia
- Endotérmico
- ΔH
- 257,0 kJ/mol
- Catalisador
- Gold or silver catalyst
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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).