Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 17, Issue 49, Pages 13795-13799Publisher
WILEY-BLACKWELL
DOI: 10.1002/chem.201100783
Keywords
catalytic hydrogenation; gas-phase reactions; ionic liquids; NMR spectroscopy; rhodium complexes
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Funding
- Excellence Initiative of the German federal and state governments
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para-Hydrogen induced polarization (PHIP) NMR spectroscopy emerges as an efficient and robust method for on-line monitoring of gas-phase hydrogenation reactions. Here we report detailed investigations of supported ionic liquid phase (SILP) catalysts in a continuous gas-phase hydrogenation of propene with PHIP NMR spectroscopy. A relocation of the rhodium complex in the thin layer of ionic liquid in the SILP catalyst at the initial stage of the propene hydrogenation is demonstrated. PHIP NMR spectroscopy can provide profound insight into the evolution of SILP catalysts during hydrogenation reactions.
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