Atomic iron on mesoporous N-doped carbon to achieve dehydrogenation reaction at room temperature
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Atomic iron on mesoporous N-doped carbon to achieve dehydrogenation reaction at room temperature Zheng Chen1,§ (), Wenjuan Yang2,§, Yue Wu3, Chao Zhang3, Jun Luo4, Chen Chen3, and Yadong Li3 1
Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China 2 International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China 3 Department of Chemistry, Tsinghua University, Beijing 100084, China 4 Center for Electron Microscopy, Tianjin University of Technology, Tianjin 300384, China § Zheng Chen and Wenjuan Yang contributed equally to this work. © Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 Received: 28 April 2020 / Revised: 1 June 2020 / Accepted: 6 July 2020
ABSTRACT Atomic non-noble metal materials show the potential to substitute noble metals in catalysis. Herein, melamine formaldehyde resin is developed to synthesize atomic iron on mesoporous nitrogen-doped carbon. The triazine units with abundant nitrogen content and cavity can realize effectively anchoring of single metal atoms. The atomic iron with unique charge and coordination characteristics shows superior catalytic performance in dehydrogenation reaction. Various N-heterocycles compounds and amines can be efficiently dehydrogenated into the corresponding products at room temperature, which is the mildest of all reported reaction conditions even when noble metal catalysts are considered. Therefore, development of atomic non-noble metal catalysts with mesoporous structure may provide an effective way to realize the substitution for noble metals in heterogeneous catalysis.
KEYWORDS atomic dispersion, non-noble metal, nitrogen-doped carbon, mesoporous structure, dehydrogenation
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Introduction
In heterogeneous catalysis, noble metals (NMs) have been the dominant catalysts because of their excellent catalytic performance at mild reaction conditions [1–3]. Rare reserves and high prices undoubtedly limit the large-scale application of NMs [4, 5]. Non-noble metals (NNMs) have been designed to replace noble metals, which have attracted the attention of catalytic researchers [6–8]. The composite materials formed by NNMs and nitrogen-doped carbon (N-C) have become a research hotspot in recent years, especially show the possibility of replacing commercial NMs such as Pt/C in electrochemistry [9, 10]. In heterogeneous catalysis, especially for organic reactions, very few literature has reported that the catalytic performance of NNM catalysts can be comparable to that of NM catalysts. Although it is not difficult to achieve high activity, harsh reaction temperature and pressure are always necessary for NNM catalysts [11, 12]. NNM catalysts with atomic dispersion have developed rapidly, which provides a new possibility for the substitution
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