Highly Tunable Selectivity for Syngas‐Derived Alkenes over Zinc and Sodium‐Modulated Fe5C2 Catalyst |
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| Authors: | Peng Zhai Cong Xu Dr Rui Gao Dr Xi Liu Mengzhu Li Weizhen Li Xinpu Fu Prof Chunjiang Jia Jinglin Xie Ming Zhao Dr Xiaoping Wang Prof Yong‐Wang Li Prof Qianwen Zhang Prof Xiao‐Dong Wen Prof Ding Ma |
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| Institution: | 1. Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, China;2. School of Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing, China;3. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi, P.R. China;4. Synfuels China, Beijing, P.R. China;5. Key Laboratory for Colloid and Interface Chemistry, Key Laboratory of Special Aggregated Materials, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China |
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| Abstract: | Zn‐ and Na‐modulated Fe catalysts were fabricated by a simple coprecipitation/washing method. Zn greatly changed the size of iron species, serving as the structural promoter, while the existence of Na on the surface of the Fe catalyst alters the electronic structure, making the catalyst very active for CO activation. Most importantly, 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—especially C5+ alkenes (with more than 50% selectivity in hydrocarbons)—while lowering the selectivity for undesired products. This study enriches C1 chemistry and the design of highly selective new catalysts for high‐value chemicals. |
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| Keywords: | CO hydrogenation heterogeneous catalysis iron catalysts olefins sodium dopant |
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