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

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Date
2020
Volume
59
Issue
37
Journal
Angewandte Chemie : a journal of the Gesellschaft Deutscher Chemiker : International edition
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Publisher
Weinheim : Wiley-VCH
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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 CoIINx centers as active sites. The optimal low-cost catalyst is a promising candidate for liquid H2 generation. © 2020 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.

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CC BY-NC 4.0 Unported