Communication - Electrocatalytic Coupling of Methane at Platinum Oxide Electrodes in Superacids

Guangfang Li, Yuxin Fang, Christopher Arges, Craig Plaisance, John Flake

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Abstract

Electrochemical oxidation of methane in the absence of chemical oxidants offers the potential to directly synthesize high value hydrocarbons at low temperatures. Experimental results demonstrate methane oxidization at oxidized Pt electrodes in liquid superacid electrolytes. Ethane and ethylene are observed as products under chronoamperometric experiments at room temperature. Faradaic efficiencies for C2 products range from 5% to 25% at anodic potentials between 0.8 to 1.4 V vs RHE. A generalized Lewis-acid Pt2+ mechanism including methylidene coupling is proposed.

Original languageEnglish (US)
Article number155503
JournalJournal of the Electrochemical Society
Volume167
Issue number15
DOIs
StatePublished - Jan 12 2020

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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