Spent automotive three-way catalysts towards CC bond forming reactions

Spent automotive three-way catalysts, containing Rh, Pd and Pt nanoparticles supported on oxide-based ceramic materials, catalyze the Heck cross-coupling of iodobenzene with butyl acrylate and unsaturated alcohols at 140 °C. Under Suzuki reaction conditions, biphenyl was formed with high yield when the same catalysts were applied. Successful hydroformylation of 1-hexene was performed in the presence of PPh3. The catalytic activity of spent automotive three-way catalysts was compared with that of airborne matter collected in the city of Wrocław.

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► Filters containing airborne matter catalyze efficiently the Heck reaction.
► Spent automotive catalysts are highly active in CC bond forming reactions.
► Isomerization and hydroformylation was performed with spent automotive catalysts.
► The presence of crystalline Rh, Pd and Pt nanoparticles was evidenced by TEM.