Hydrogenation of benzoic acid derivatives over Pt/TiO₂ under mild conditions.

ABSTRACT: Hydrogenation of benzoic acid (BA) to cyclohexanecarboxylic acid (CCA) has important industrial and academic significance, however, the electron deficient aromatic ring and catalyst poisoning by carboxyl groups make BA hydrogenation a challenging transformation. Herein, we report that Pt/TiO₂ is very effective for BA hydrogenation with, to our knowledge, a record TOF of 4490 h^-1 at 80 °C and 50 bar H₂, one order higher than previously reported results. Pt/TiO₂ catalysts with electron-deficient and electron-enriched Pt sites are obtained by modifying the electron transfer direction between Pt and TiO₂. Electron-deficient Pt sites interact with BA more strongly than electron-rich Pt sites, helping the dissociated H of the carboxyl group

SUBMITTER: Guo M 

PROVIDER: S-EPMC9814562 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature