The promotional effect of gallium loading on the bifunctional Cu–Ga/γ-Al 2 O 3 catalyst for CO 2 hydrogenation to methanol and dimethyl ether at atmospheric pressure

Hydrogenation of CO 2 to methanol and dimethyl ether (DME) was investigated over gallium-promoted copper catalysts supported on γ-Al 2 O 3 (Cu–Ga/γ-Al 2 O 3 ) at atmospheric pressure. DFT computations suggest a COOH intermediate for Cu/Ga 2 O 3 interface.