Journal
JOURNAL OF CATALYSIS
Volume 219, Issue 2, Pages 452-455Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S0021-9517(03)00223-9
Keywords
supported ionic liquid phase (SILP) catalysis; hydroformylation; gas-phase fixed-bed system; propene; rhodium; sulfoxantphos
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Continuous flow gas-phase hydroformylation of propene was performed using novel supported ionic liquid-phase (SILP) catalysts containing immobilized Rh complexes of the biphosphine ligand sulfoxantphos in the ionic liquids 1-n-butyl-3-methylimidazolium hexafluorophosphate and halogen-free 1-n-butyl-3-methylimidazolium n-octylsulfate on silica support. The Rh-sulfoxantphos SILP catalysts proved to be more regioselective than catalysts without ligand and the analogous ionic liquid-free catalysts, giving up to 96% linear product. Furthermore, the performance of the catalysts was generally strongly influenced by the catalyst composition. This is the first report on the use of SILP catalysts for fixed-bed gas-phase hydroformylation. (C) 2003 Elsevier Inc. All rights reserved.
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