Dynamic behavior of molecular Pd-acetate trimers and dimers in heterogeneous vinyl acetate synthesis.

ABSTRACT: Vinyl acetate monomer (VAM) is a crucial intermediate in the production of various polymers. While molecular Pd-acetate trimers and dimers, such as Pd₃(OAc)₆ and K₂Pd₂(OAc)₆, are known to form on potassium acetate (KOAc)-promoted PdAu catalysts during heterogeneous VAM synthesis, their mechanistic role remains unclear. Here, we study the dynamics of different Pd-acetate species by utilizing in situ and operando crystallographic and spectroscopic characterizations combined with computational modeling on monometallic Pd model catalysts. The promoter-free catalyst expectedly shows low catalytic activity and VAM selectivity, corresponding to the complete reduction of Pd_n(OAc)_2n species to form Pd⁰ and PdC

SUBMITTER: Jacobs HP 

PROVIDER: S-EPMC12774893 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature