Effect of Pressure on CO2 Hydrogenation over a Catalyst Containing Iron on a Carbon Support

Key Points

• The research aims to understand how pressure affects CO2 hydrogenation over an iron catalyst supported on carbon.
• Conducted hydrogenation experiments on an Fe-containing catalyst.
• Varied temperature from 250 to 400°C.
• Applied pressures of 0.1 MPa and 8.5 MPa.
• Analyzed product yield and selectivity of hydrocarbons.
• At 0.1 MPa, only CO is produced.
• At 8.5 MPa, deeper hydrogenation occurs, forming hydrocarbons.
• Chain growth probability (α) for hydrocarbons is between 0.54 and 0.65.
• Best hydrocarbon formation was at 8.5 MPa and 400°C, with a C2–C4 olefin/alkanes ratio of 1.6.

Abstract