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Cobalt Single-Atom Catalysts with High Stability for Selective Dehydrogenation of Formic Acid.

ABSTRACT: 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 CoII Nx centers as active sites. The optimal low-cost catalyst is a promising candidate for liquid H2 generation.

SUBMITTER: Li X

PROVIDER: S-EPMC7540455 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Cobalt Single-Atom Catalysts with High Stability for Selective Dehydrogenation of Formic Acid.

Li Xiang X Surkus Annette-Enrica AE Rabeah Jabor J Anwar Muhammad M Dastigir Sarim S Junge Henrik H Brückner Angelika A Beller Matthias M

Angewandte Chemie (International ed. in English) 20200629 37

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 re ...[more]

PMID: 32458555

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