Decoding the Role of Isolated Ga + in PdGa@MFI Catalyst Promoting a Direct CO 2 Hydrogenation Path to DME

Lewis acid sites in close proximity to Brønsted acid sites in stabilizing monoformate intermediate species and facilitating the direct production of DME. Finally, this work highlights the key role of the zeolite in metal confinement, conferring excellent stability, oxidation resistance, hydrophilicity, and close proximity of active sites together with the stabilization of low-coordinated Lewis acid sites.