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|Title:||Catalytic studies of aminated MCM-41-tethered rhodium complexes for 1-hexene hydroformylation|
Tethered rhodium complex
|Source:||Huang, L., He, Y., Kawi, S. (2004-07-08). Catalytic studies of aminated MCM-41-tethered rhodium complexes for 1-hexene hydroformylation. Applied Catalysis A: General 265 (2) : 247-257. ScholarBank@NUS Repository. https://doi.org/10.1016/j.apcata.2004.01.018|
|Abstract:||Rhodium complexes have been tethered to silicate MCM-41 via an amine ligand. X-ray diffraction (XRD) and N2 adsorption-desorption studies illustrate that the resultant materials maintain the mesoporous structural ordering of MCM-41, but exhibit reduced pore sizes, total pore volumes and BET surface areas. Comparative catalytic studies have been performed of the aminated MCM-41-tethered rhodium complexes and the corresponding untethered rhodium complexes in 1-hexene hydroformylation at 80 °C and 195-1950 kPa (H 2/CO = 1). The tethered PPh3-free rhodium complex has disadvantage over the corresponding untethered one in catalytic activity and selectivity except for n/i aldehyde ratio. The tethered PPh3- containing rhodium complex has advantage over the corresponding untethered one in catalytic activity and selectivity except for n/i aldehyde ratio. Excess PPh3 added enhances obviously the performances of the tethered PPh3-containing rhodium complex in all aspects. The effects of total reaction pressure and donor ligands on the catalytic properties are dealt with. © 2004 Elsevier B.V. All rights reserved.|
|Source Title:||Applied Catalysis A: General|
|Appears in Collections:||Staff Publications|
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