Electrocatalytic Production of Ethylene Glycol from Ethylene on Both Electrodes

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dc.contributor.authorHuang, L.
dc.contributor.authorBao, D.
dc.contributor.authorZheng, Y.
dc.contributor.authorQiao, S.-Z.
dc.date.issued2025
dc.description.abstractElectrochemical 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.
dc.description.statementofresponsibilityLinsen Huang, Deyu Bao, Yao Zheng, and Shi-Zhang Qiao
dc.identifier.citationACS Energy Letters, 2025; 10(8):3907-3913
dc.identifier.doi10.1021/acsenergylett.5c01654
dc.identifier.issn2380-8195
dc.identifier.issn2380-8195
dc.identifier.orcidZheng, Y. [0000-0002-2411-8041]
dc.identifier.orcidQiao, S.-Z. [0000-0002-1220-1761] [0000-0002-4568-8422]
dc.identifier.urihttps://hdl.handle.net/2440/147895
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/CE230100032
dc.relation.granthttp://purl.org/au-research/grants/arc/DP230102027
dc.relation.granthttp://purl.org/au-research/grants/arc/DP240102575
dc.relation.granthttp://purl.org/au-research/grants/arc/FT200100062
dc.rights© 2025 American Chemical Society
dc.source.urihttps://doi.org/10.1021/acsenergylett.5c01654
dc.subjectAlcohols; Electrodes; Hydrocarbons; Oxidation; Seawater
dc.titleElectrocatalytic Production of Ethylene Glycol from Ethylene on Both Electrodes
dc.typeJournal article
pubs.publication-statusPublished online

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