Selective Hydrogenation of Aromatic Ketone to Aromatic Alcohol over Pd Single-Atom Catalysts
Guanghui Guo, Ying Zhang, Hao Zhang, Xingcong Zhang, Xiaohui He, Hongbing Ji
Abstract
Aromatic alcohols prepared by hydrogenation of aromatic ketones are an important kind of intermediate that are widely used in the production of fine chemicals. Single-atom catalysts (SACs) are considered ideal alternatives to conventional heterogeneous catalysts due to their unique geometrical structure. Herein, we report the palladium SACs supported by titanium oxide (Pd 1 /TiO 2 SACs) successfully synthesized via a simple and efficient ball milling process. In the hydrogenation of acetophenone to 1-phenylethanol, Pd 1 /TiO 2 SACs exhibit higher conversion and selectivity than Pd n /TiO 2 nanoparticle catalysts. Also, Pd 1 /TiO 2 SACs exhibit excellent hydrogenation for a range of compounds containing C═O bonds.