Premium
Iodide‐Promoted Dehydrogenation of Formic Acid on a Rhodium Complex
Author(s) -
Wang Zhijun,
Lu ShengMei,
Wu Jianjun,
Li Can,
Xiao Jianliang
Publication year - 2016
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.201501061
Subject(s) - dehydrogenation , chemistry , formic acid , iodide , catalysis , halide , hydride , rhodium , triethylamine , medicinal chemistry , hydrogen iodide , hydrogen , inorganic chemistry , organic chemistry
Efficient and simple catalyst systems for dehydrogenation of formic acid (FA) to produce hydrogen are always desirable. In this work, the catalytic dehydrogenation of FA to H 2 and CO 2 by using the readily available [RhCp*Cl 2 ] 2 was found to be accelerated simply by the addition of halide anions, iodide being the most effective. At 60 °C, with [RhCp*Cl 2 ] 2 in azeotropic FA and triethylamine (TEA), the initial turnover frequency of dehydrogenation in the presence of I – (4375 h –1 ) is seven times as high as that of the reaction without additive (625 h –1 ). Preliminary mechanistic studies suggest that the dehydrogenation is turnover‐limited by the hydride‐formation step, which could be facilitated by the presence of I – .