Precise regulation of selectivity of supported nano-Pd catalysts using polysiloxane coatings with tunable surface wettability

A facile method was developed for surface modification of supported nano-Pd with tailorable wettability. The obtained Pd/TiO2@POS catalytic materials could be used in controllable synthesis of styrene and ethylbenzene from hydrogenation of phenylacetylene, and the selective synthesis of imine and N-methylanilines in reductive amination reaction. The precise modification of the hydrophilicity/hydrophobicity of the catalyst surface is the crucial operation to realize this targeted transformation.