CO2 hydrogenation to methanol and dimethyl ether by Pd-Pd2Ga catalysts supported over Ga2O3 polymorphs

- Pd-Pd2Ga supported on Ga2O3 polymorphs as CO2 hydrogenation catalysts.
- TOF increased with an increase in the content of Pd2Ga.
- Methanol dehydrates to dimethyl ether over Pd/Ga2O3 catalysts.
- Deactivation by loss of basic sites.
- DME selectivity increased by addition of Nb2O5.