We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Boosting Electrocatalytic Ethylene Epoxidation by Single Atom Modulation.
- Authors
Wang, Hanyu; Wang, Shuo; Song, Yanpeng; Zhao, Yang; Li, Zhenyu; Shen, Yuxiang; Peng, Zhangquan; Gao, Dunfeng; Wang, Guoxiong; Bao, Xinhe
- Abstract
The electrochemical synthesis of ethylene oxide (EO) using ethylene and water under ambient conditions presents a low‐carbon alternative to existing industrial production process. Yet, the electrocatalytic ethylene epoxidation route is currently hindered by largely insufficient activity, EO selectivity, and long‐term stability. Here we report a single atom Ru‐doped hollandite structure KIr4O8 (KIrRuO) nanowire catalyst for efficient EO production via a chloride‐mediated ethylene epoxidation process. The KIrRuO catalyst exhibits an EO partial current density up to 0.7 A cm−2 and an EO yield as high as 92.0 %. The impressive electrocatalytic performance towards ethylene epoxidation is ascribed to the modulation of electronic structures of adjacent Ir sites by single Ru atoms, which stabilizes the *CH2CH2OH intermediate and facilitates the formation of active Cl2 species during the generation of 2‐chloroethanol, the precursor of EO. This work provides a single atom modulation strategy for improving the reactivity of adjacent metal sites in heterogeneous electrocatalysts.
- Subjects
EPOXIDATION; ETHYLENE oxide; ETHYLENE; ATOMS; ELECTRONIC modulation; MANUFACTURING processes
- Publication
Angewandte Chemie, 2024, Vol 136, Issue 20, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202402950