Linsen Huang, Deyu Bao, Yao Zheng* and Shi-Zhang Qiao*,
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Electrocatalytic Production of Ethylene Glycol from Ethylene on Both Electrodes
Electrochemical oxidation of ethylene-to-ethylene glycol offers a sustainable alternative to energy-intensive thermal processes. However, current strategies using chloride-mediated electrooxidation of ethylene suffer from low selectivity and efficiency. Here, we report a CrOx–IrO2 catalyst that achieves a faradaic efficiency (FE) of 98.5% with an unprecedent ∼100% selectivity for ethylene glycol on the anode. This catalyst preferentially promotes direct *Cl adsorption on Ir sites and enhances *ClO intermediate coverage during 2-chloroethanol formation, the key precursor to ethylene glycol, while suppressing the competing *OOH pathway. Coupled with cathodic H2O2-mediated ethylene oxidation in an electrolyzer, this system reaches ∼100% product selectivity at both the anode and cathode, with a total production rate of 2.69 mmol cm–2 h–1. Compared to conventional systems that utilize either chloride or H2O2 as individual mediators, this dual-mediator strategy achieves energy savings of approximately 52 and 76%, respectively, enabling a scalable and efficient platform for ethylene glycol production from ethylene.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.