Highly Efficient and Chemoselective Tandem Hydroformylation‐Hydrogenation of Alkenes to Alcohols over g‐CN Supported Bimetallic Rh and Co Nanoparticles Catalysts

Working together: G-CN supported bimetallic Rh and Co nanoparticle catalysts was firstly applied in the tandem hydroformylation-hydrogenation of olefins and exhibited the excellent catalytic activity and chemoselectivity for alcohol (87.8 %) due to the synergetic effect of Rh and Co nanoparticles.

Abstract

The objective of the tandem hydroformylation-hydrogenation of alkenes to corresponding alcohols was to design an efficient and stable heterogeneous catalyst. To this end, a series of novel heterogeneous graphitic carbon nitride (g-CN) supported bimetallic Rh−Co nanoparticle catalysts (Rh−Co/g-CN) were prepared and subsequently studied for this one-pot two-step reaction. The lamellar structure makes Rh and Co nanoparticles with diameters of <1 nm and 20 nm, respectively, homogeneously deposited on the surface of g-CN layers, exhibit remarkable conversion of styrene (99.9 %) and chemoselectivity for alcohol (87.8 %). More importantly, Co nanoparticles are found to play an important role in the improvement of the chemoselectivity for alcohol due to the formation of catalytic active species [HCo(CO)_y]. Besides the detailed investigation of the catalytic properties of Rh−Co/g-CN under different reaction conditions, the reuse of Rh−Co/g-CN was conducted for five times and no evident decrease in the activity and chemoselectivity was observed. Therefore, we expect that this work could offer an initial insight into g-CN-based heterogeneous catalyst on the tandem hydroformylation-hydrogenation reaction.

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