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Cover Feature: Kinetic Studies on Formic Acid Dehydrogenation Catalyzed by an Iridium Complex towards Insights into the Catalytic Mechanism of High‐Pressure Hydrogen Gas Production (Chem. Eur. J. 67/2017)
Author(s) -
Iguchi Masayuki,
Zhong Heng,
Himeda Yuichiro,
Kawanami Hajime
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201704083
Subject(s) - dehydrogenation , formic acid , catalysis , iridium , chemistry , hydrogen , kinetic energy , water gas shift reaction , ligand (biochemistry) , reaction mechanism , kinetic isotope effect , limiting , inorganic chemistry , organic chemistry , deuterium , physics , biochemistry , receptor , quantum mechanics , mechanical engineering , engineering
Kinetic studies of the reaction mechanism of formic acid (FA) dehydrogenation under high‐pressure conditions were investigated in the presence of iridium complex with 4,4’‐dihydroxy‐2,2’‐bipyridine ligand. Kinetic isotope effect experiments revealed that the shift of the rate‐limiting step at low and high concentrations of FA can be caused by the pH dependence of the reaction steps. The proposed equation corresponds well to the results of the shift phenomena. The results should be useful for designing hydrogen‐fuel‐filling systems in the near future. More information can be found in the Full Paper by H. Kawanami et al. on page 17017.