Conversion of CO2 to Dimethylether and Methanol over Hybrid Catalysts

Abstract Combination of a CH3OH synthesis catalyst (Cu-ZnO-Al2O3) with a solid acid, which promotes CH3OCH3 formation, creates a strong driving force for CO2 conversion. At equilibrium higher yields and selectivities can be achieved: 24.3% yield in DME + CH3OH with hybrid catalyst, compared to 11.6% with CH3OH synthesis catalyst only, at 240 °C and 3 MPa. Zeolites were proved to be very efficient, with a yield of 17%.