Photoreduction of CO₂ to Methanol
CO2 + 3H2O → CH3OH + 3/2 O2
Aperçu
Photocatalysts can reduce CO₂ to methanol using sunlight and water, mimicking photosynthesis to produce liquid fuel. Copper-modified TiO₂ and other semiconductor catalysts have shown promising results. This artificial photosynthesis approach could simultaneously address CO₂ emissions and produce renewable fuel.
Participants
| Rôle | Substance | Coefficient | État |
|---|---|---|---|
| Réactif | Carbon Dioxide CO₂ | 1 | (g) |
| Réactif | Water H₂O | 3 | (l) |
| Produit | Methanol CH₃OH | 1 | (l) |
Exemple du quotidien
Researchers envision solar fuel stations that could convert atmospheric CO₂ into methanol fuel using sunlight and water.
Importance industrielle
Solar-to-fuel conversion via CO₂ photoreduction is an active area of research with potential to produce carbon-neutral liquid fuels.
Propriétés
- Type
- Photochemical
- Réversible
- Non
- Énergie
- Endothermique
- ΔH
- 727,0 kJ/mol
- Catalyseur
- Cu/TiO₂ photocatalyst
Réactions associées
Cis-Trans Isomerization of Retinal
Silver Chloride Photodecomposition
Luminol Chemiluminescence
Firefly Bioluminescence (Luciferin Oxidation)
Photolysis of Water (Vacuum UV)
Photochemical Smog Formation (NO₂ Photolysis)
Photodegradation of Methylene Blue by TiO₂
Photodissociation of Chlorine Gas
Silver Bromide Photodecomposition
Chlorophyll Fluorescence
Frequently Asked Questions
What is the equation for Photoreduction of CO₂ to Methanol?
The balanced equation is: CO₂ + 3H₂O → CH₃OH + 3/2 O₂.
What type of reaction is Photoreduction of CO₂ to Methanol?
Photoreduction of CO₂ to Methanol is a photochemical reaction.
Is Photoreduction of CO₂ to Methanol exothermic or endothermic?
Photoreduction of CO₂ to Methanol is endothermic (absorbs energy). The enthalpy change (ΔH) is 727.0 kJ/mol.
What conditions are needed for Photoreduction of CO₂ to Methanol?
This reaction requires a catalyst (Cu/TiO₂ photocatalyst).