The selective conversion of CO2 and H2 into valuable chemicals and fuels is a promising route for carbon recycling. Multiple routes have been developed for the CO2 hydrogenation to methanol, higher alcohols, dimethyl ether (DME), aromatics, hydrocarbon, and olefins. Among these products, DME is attractive because it is nontoxic and noncorrosive and has been used as a platform chemical in industry, a carrier for hydrogen, and an additive for fuels.