Journal ArticleDOI
Fe5C2 nanoparticles: a facile bromide-induced synthesis and as an active phase for Fischer-Tropsch synthesis.
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TLDR
A facile wet-chemical route for the synthesis of Hägg iron carbide nanoparticles, in which bromide was found to be the key inducing agent for the conversion of Fe(CO)(5) to Fe(5)C(2) in the synthetic process, showing enhanced catalytic performance in terms of CO conversion and product selectivity.Abstract:
Iron carbide nanoparticles have long been considered to have great potential in new energy conversion, nanomagnets, and nanomedicines. However, the conventional relatively harsh synthetic conditions of iron carbide hindered its wide applications. In this article, we present a facile wet-chemical route for the synthesis of Hagg iron carbide (Fe5C2) nanoparticles, in which bromide was found to be the key inducing agent for the conversion of Fe(CO)5 to Fe5C2 in the synthetic process. Furthermore, the as-synthesized Fe5C2 nanoparticles were applied in the Fischer–Tropsch synthesis (FTS) and exhibited intrinsic catalytic activity in FTS, demonstrating that Fe5C2 is an active phase for FTS. Compared with a conventional reduced-hematite catalyst, the Fe5C2 nanoparticles showed enhanced catalytic performance in terms of CO conversion and product selectivity.read more
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Well-Defined Materials for Heterogeneous Catalysis: From Nanoparticles to Isolated Single-Atom Sites.
TL;DR: The roles of nanoparticles and isolated single atom sites in catalytic reactions are surveyed and the challenges and opportunities of well-defined materials for catalyst development are highlighted, gaining a fundamental understanding of their active sites.
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Highly Tunable Selectivity for Syngas-Derived Alkenes over Zinc and Sodium-Modulated Fe5 C2 Catalyst.
Peng Zhai,Cong Xu,Rui Gao,Xi Liu,Mengzhu Li,Weizhen Li,Xinpu Fu,Chunjiang Jia,Jinglin Xie,Ming Zhao,Xiaoping Wang,Yong-Wang Li,Qianwen Zhang,Xiaodong Wen,Ding Ma +14 more
TL;DR: C1 chemistry and the design of highly selective new catalysts for high-value chemicals are enriched and the electronic structure of the catalyst surface suppresses the hydrogenation of double bonds and promotes desorption of products, which renders the catalyst unexpectedly reactive toward alkenes.
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Structure-Relaxivity Relationships of Magnetic Nanoparticles for Magnetic Resonance Imaging.
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References
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The renaissance of iron-based Fischer-Tropsch synthesis: on the multifaceted catalyst deactivation behaviour.
Emiel de Smit,Bert M. Weckhuysen +1 more
TL;DR: This critical review will summarize the current state of knowledge of the underlying mechanisms for the activation and eventual deactivation of iron-based Fischer-Tropsch catalysts and suggest systematic approaches for relating chemical identity to performance in next generation iron- based catalyst systems.
Journal ArticleDOI
Nitrogen‐Enriched Core‐Shell Structured Fe/Fe3C‐C Nanorods as Advanced Electrocatalysts for Oxygen Reduction Reaction
Zhenhai Wen,Suqin Ci,Suqin Ci,Fei Zhang,Xinliang Feng,Shumao Cui,Shun Mao,Shenglian Luo,Zhen He,Junhong Chen +9 more
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