Influence of the textural properties of Rh/MOF-5 on the catalytic properties in the hydroformylation of olefins

Rh/MOF-5 catalysts have been prepared and characterized by XRD, FTIR, nitrogen adsorption, and TEM. MOFs with different textural properties, namely nano-sized materials and larger crystals, were obtained by changing synthesis conditions. The catalytic properties of the different samples were tested in the hydroformylation reaction of olefins. It is shown that the catalytic properties of nano-sized Rh/MOF-5 catalysts markedly differ from that of larger crystals. Especially, the selectivity to n-aldehydes is clearly improved. However, also the double bond isomerization side reaction is enhanced. The results confirm the potential of MOFs for the application as catalyst supports.

Receiving high conversions and special high selectivities to n-aldehydes in hydroformylation favored by the rhodium MOF-5 supported catalyst, MOF-5 material shows its potential support for this heterogeneous reaction.Figure optionsDownload as PowerPoint slideHighlights
► Different textural Rh/MOF-5 supported catalysts have been prepared and characterized.
► Catalytic performance has been studied in hydroformylation of different olefins.
► Nano-sized and larger crystal Rh/MOF-5 show different catalytic behavior.
► The selectivity to n-aldehyde is markedly improved with nano-sized Rh/MOF-5 catalyst.
► MOF-5 materials show the potential for catalyst supports.