Bimetallic PdAu–KOac/SiO2 catalysts for vinyl acetate monomer (VAM) synthes…

Abstract. Structural changes of a commercial supported PdAu/SiO2 catalyst for VAM production aged under laboratory and industrial conditions were studied by XRD, TEM/EDXS, XPS, ICP-OES and FTIR spectroscopy. The fresh catalyst contains alloy particles with a wide range of Pd/Au ratios formed by agglomerated crystallites of different sizes. The particles do not show any noticeable sintering …