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Cobalt Single‐Atom Catalysts with High Stability for Selective Dehydrogenation of Formic Acid
Author(s) -
Li Xiang,
Surkus AnnetteEnrica,
Rabeah Jabor,
Anwar Muhammad,
Dastigir Sarim,
Junge Henrik,
Brückner Angelika,
Beller Matthias
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202004125
Subject(s) - dehydrogenation , formic acid , cobalt , catalysis , x ray photoelectron spectroscopy , materials science , scanning transmission electron microscopy , electron paramagnetic resonance , transmission electron microscopy , nanoparticle , photochemistry , inorganic chemistry , chemistry , chemical engineering , nanotechnology , organic chemistry , nuclear magnetic resonance , physics , engineering
Metal–organic framework (MOF)‐derived Co‐N‐C catalysts with isolated single cobalt atoms have been synthesized and compared with cobalt nanoparticles for formic acid dehydrogenation. The atomically dispersed Co‐N‐C catalyst achieves superior activity, better acid resistance, and improved long‐term stability compared with nanoparticles synthesized by a similar route. High‐angle annular dark‐field–scanning transmission electron microscopy, X‐ray photoelectron spectroscopy, electron paramagnetic resonance, and X‐ray absorption fine structure characterizations reveal the formation of Co II N x centers as active sites. The optimal low‐cost catalyst is a promising candidate for liquid H 2 generation.