Ultrathin Fe-Nx-C single-atom catalysts with bifunctional active site for simultaneous production of ethylene and aromatic chlorides

被引：47

作者：

Gan, Guoqiang ^{[1
]}

Li, Xinyong ^{[1
]}

Fan, Shiying ^{[1
]}

Yin, Zhifan ^{[1
]}

Wang, Liang ^{[1
]}

Chen, Guohua ^{[2
]}

机构：

[1] Dalian Univ Technol, Sch Environm Sci & Technol, State Key Lab Fine Chem, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China

[2] Hong Kong Polytech Univ, Dept Mech Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China

来源：

NANO ENERGY | 2021年 / 80卷

基金：

中国国家自然科学基金;

关键词：

Aromatic chlorination reaction; Electrochemical catalysis; Ethylene production; First-principles calculations; Single-atom catalyst;

D O I：

10.1016/j.nanoen.2020.105532

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ethylene evolution reaction (EER) by electrochemical dechlorination of 1,2-dichloroethane is a promising and an economical strategy. The process is however severely impeded by the poor reactivity of catalysts, the accumulation of HCl in the electrolyte as well as low value-added by-products at anode. Herein, a bifunctional ultrathin Fe-N-x-C single-atom catalysts (SACs) has been successfully prepared and investigated as both cathode and anode material for EER and aromatic chlorination reaction (ACR), respectively. The generated HCl was recycled as a chlorinating reagent. The Fe-N-x-C SACs exhibited an excellent electrocatalytic performance simultaneously for both EER and ACR with high ethylene and para-chloroanisole selectivity obtained. The first-principles calculations indicated that Fe-N-4 was the dominating catalytic active site for the generation of ethylene as well as para-chloroanisole. The coupling strategy of ACR at anode not only can accelerate the reaction rate of EER, but also provide a highly-efficient and atom-economical approach for the production of valuable ethylene and aromatic chlorides.

引用

页数：8

共 41 条

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