Electrochemical and infrared study of electro-oxidation of dimethyl ether (DME) on platinum polycrystalline electrode in acid solutions

Yi Zhang, Leilei Lu, Yujin Tong, Masatoshi Osawa, Shen Ye

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

Electro-oxidation of dimethyl ether (CH3OCH3, denoted as DME below) on Pt polycrystalline electrode has been investigated by electrochemical and in situ infrared (IR) measurements in acid solutions. A reaction intermediate species, (CH3OCH2-)ad, has been observed in the low potential region as an initial product for dehydrogenation process of DME on Pt electrode surface. This species is subsequently decomposed to adsorbed carbon monoxide (CO) and finally oxidized to carbon dioxide (CO2) in higher potential region. The time-resolved IR measurement is employed to follow the transient process of the formation and decomposition of the intermediate on Pt electrode surface. Based on these electrochemical and IR spectroscopic results, a reaction scheme for DME electro-oxidation process is proposed.

Original languageEnglish
Pages (from-to)6093-6103
Number of pages11
JournalElectrochimica Acta
Volume53
Issue number21
DOIs
Publication statusPublished - 2008 Sep 1
Externally publishedYes

Keywords

  • Dimethyl ether (DME)
  • Electro-oxidation
  • Flow-cell
  • Fuel cell
  • In situ IR spectroscopy
  • Platinum electrode

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Fingerprint Dive into the research topics of 'Electrochemical and infrared study of electro-oxidation of dimethyl ether (DME) on platinum polycrystalline electrode in acid solutions'. Together they form a unique fingerprint.

Cite this