A simple and efficient Pd/Al₂O₃-NR-RD catalyst was prepared by depositing palladium on a shape controllable Al₂O₃-NR support through a two-step process that involves hydrothermal synthesis of Al₂O₃-NR_s followed by reductive-deposition of palladium. This catalyst showed high activity in the catalytic formylation of amines by CO₂–H₂ under mild conditions with up to 96% yield.

★★★★☆ Cui XJ,Zhang Y,Deng YQ,et al. Amine Formylation Via Carbon Dioxide Recycling Catalyzed By A Simple And Efficient Heterogeneous Palladium Catalyst[J]. Chemical Communications,2013,50:189-191.