Technology atlas / Catalytic hydrogenation
CO₂ to methanol
CO₂ and hydrogen react over a copper/zinc-oxide catalyst to make methanol, a fuel and chemical building block.
Technical reference · Updated 2026-10-10 · No current-news claim
Where the carbon goes
Methanol used as fuel releases its carbon at combustion; methanol converted into durable chemicals or materials holds it longer.
Conceptual process flow · left to right
- 01CO₂ purification
- 02Hydrogen + compression
- 03Catalytic synthesis
- 04Condensation + recycle
- 05Distillation
- 06Methanol
From chemistry to process
- Feedstocks
- Purified CO₂, Hydrogen
- Products
- Methanol, Water
- Catalysts
- Cu/ZnO-based catalyst systems; formulation is process-specific
- Conditions
- Elevated pressure and temperature; report the specific reactor conditions rather than a universal optimum.
Performance & demonstrated scale
Project-dependent. No plant-level scale or operational status has been verified in this initial atlas.
1.374 t CO₂/t methanol theoretical
0.189 t H₂/t methanol theoretical
Economics
Purchased hydrogen can dominate feedstock cost. Use the transparent scenario model; its partial cost excludes capital recovery and fixed operating expenses.
Climate considerations
Carbon in fuel is released at use. Climate benefit depends on feedstock origin, displaced production and energy supply; utilization does not establish removal.
CCU Reality Check · pathway assessment
What remains to be demonstrated?
This initial assessment separates process knowledge from the evidence needed for a commercial conclusion. Missing information is left unresolved.
| Dimension | Assessment and evidence gap |
|---|---|
| CO₂ feedstock availability | No site-specific supplier, volume, purity guarantee or delivery contract has been verified. |
| Capture and delivered cost | Not quantified. Capture, conditioning, compression and transport need separate boundaries. |
| Energy and hydrogen demand | Theoretical stoichiometric or thermodynamic values are shown above. Actual process energy and feed losses remain scenario assumptions. |
| Catalyst and reactor performance | Cu/ZnO-based catalyst systems; formulation is process-specific. No plant lifetime or sustained performance is verified here. |
| Product separation | The process flow identifies separation stages where relevant; a quantified separation duty and cost remain unavailable. |
| CAPEX and OPEX | No plant-specific capital estimate or complete operating-cost dataset is attached. |
| Minimum selling price | Not calculated. Capital recovery, utilization, financing and a complete operating boundary are required. |
| Fossil benchmark competitiveness | No verified regional benchmark comparison. Calculator benchmark values, where shown, are illustrative. |
| Climate performance | Carbon in fuel is released at use. Climate benefit depends on feedstock origin, displaced production and energy supply; utilization does not establish removal. |
| Scale-up bottlenecks | Hydrogen cost and electricity supply; CO₂ contaminants and catalyst life; Water separation, purge losses and heat integration; Product offtake and capital utilization. |
| Customer and offtake readiness | No qualified-customer or executed-offtake evidence is attached to this pathway profile. |
| Policy dependence | Not assessed for a specific project or jurisdiction. Do not assume subsidies or certification eligibility. |
Transparent calculation · analyst assumptions
CCU Reality Check
What does hydrogen do to the cost of CO₂-derived methanol? Adjust the scenario below. These are illustrative inputs, not market prices.
Partial variable cost
$418/t above the assumed fossil price.