Catalytic studies of aminated MCM-41-tethered rhodium complexes for hydroformylation of 1-octene and styrene

Abstract

Abstract The performances of aminated MCM-41-tethered rhodium complex catalysts in hydroformylation of 1-octene and styrene have been shown by comparison with the catalytic results of corresponding untethered rhodium complex catalysts. For 1-octene hydroformylation, the tethered PPh3-free rhodium complex is of no advantages in activity, selectivity and n/i aldehyde ratio over the corresponding untethered one, whereas the tethered PPh3-containing rhodium complex is of enormous advantages in activity and selectivity except for n/i aldehyde ratio over the untethered one. Adding excess PPh3 increases strongly all catalytic performances, especially for the tethered PPh3-free rhodium complex. For styrene hydroformylation, similar effects of donor ligands on catalytic performances are more evident.