The heterogeneously catalysed gas phase hydroformylation of ethylene to propionaldehyde was studied over solid RhCl(PPh3)3 and RhCl(CO)(PPh3)2. At 3 bar and 185 °C, an active phase formed from RhCl(PPh3)3 which was different from RhCl(CO)(PPh3)2 under the reaction conditions studied. The selectivity of RhCl(PPh3)3 to propanal was much better than that of supported Rh-metal. Thus, solid metal-complexes operated in gas phase reactions clearly hold promise as a new class of heterogeneous catalysts.
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Zapirtan, V., Mojet, B., van Ommen, J. et al. Gas phase hydroformylation of ethylene using organometalic Rh-complexes as heterogeneous catalysts. Catal Lett 101, 43–47 (2005). https://doi.org/10.1007/s10562-004-3747-8
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DOI: https://doi.org/10.1007/s10562-004-3747-8