Hybrid Catalyst of a Metal–Organic Framework, Metal Nanoparticles, and Oxide That Enables Strong Steric Constraint and Metal–Support Interaction for the Highly Effective and Selective Hydrogenation of Cinnamaldehyde

In this work, we designed a hybrid catalyst composed of a metal–organic framework (MOF), Pt nanoparticles (NPs), and ferric oxide, namely, Co-MOF-74@(Pt@Fe 2 O 3 ), which enables not only high turnover frequencies of up to 245.7 h –1 but also ultrahigh 100% selectivity toward cinnamyl alcohol in the hydrogenation of cinnamaldehyde under mild conditions. This excellent performance is attributed to the fact that such a hybrid catalyst enables not only strong steric constraint to provide the favored C═O adsorption of cinnamaldehyde but also strong metal–support interaction to lower the electron density of Pt NPs.