Micrometre‐Sized Porous Polymer Beads as Heterogeneous Molecular Catalysts

We demonstrate the design of micrometre-sized porous polymer beads as macroligands for the heterogenization of molecular catalysts. The accessibility as well as the catalytic activity of heterogenized Rhodium complexes is shown in CO₂ reduction and transfer hydrogenation reactions.

Abstract

Porous polymers have great potential as versatile, chemically stable catalyst supports. Yet, shaping of the resulting powders remains a challenge. Here, we demonstrate the use of suspension polymerisation to design micrometre-sized porous polymers beads containing metal binding sites. The good accessibility of the binding sites ensures high catalytic activity, which is demonstrated for two model reactions: photochemical CO₂ reduction and transfer hydrogenation of aromatic ketones. Importantly, the shaping of the host material does not affect the catalytic activity of the active site.

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