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A Precious Catalyst: Rhodium‐Catalyzed Formic Acid Dehydrogenation in Water
Author(s) -
Fink Cornel,
Laurenczy Gábor
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900344
Subject(s) - dehydrogenation , chemistry , formic acid , catalysis , rhodium , aqueous solution , arrhenius plot , inorganic chemistry , arrhenius equation , activation energy , organic chemistry
The performance of rhodium complex [Cp*Rh(bis(pyrazol‐1‐yl)methane)Cl]Cl was evaluated for formic acid dehydrogenation in aqueous solution. Solid‐state X‐ray diffraction helped to confirm the catalyst structure. Multinuclear NMR spectroscopy was employed to follow the dehydrogenation of formic acid. The reactions have been carried out in high‐pressure NMR sapphire tubes. An activation energy of +77.19 ± 4 kJ/mol was determined via an Arrhenius plot, which is in good agreement with literature findings. The catalyst afforded a TOF of 1086 h –1 and exhibited good stability. Based on our observations and literature, we propose a catalytic cycle.