Adsorption and Electrooxidation of Dimethyl Ether on Platinized Platinum Electrode in Sulfuric Acid Solution

作者：Votchenko E Yu; Kubanova M S; Smirnova N V^*; Petrii O A

来源：Russian Journal of Electrochemistry, 2010, 46(2): 212-217.

DOI：10.1134/S1023193510020138

• Pt/Pt electrode
• dimethyl ether
• adsorption
• electrooxidation

Adsorption and oxidation of dimethyl ether (DME) on the Pt/Pt electrode from 0.5 M H(2)SO(4) is studied by measuring transients of current and potential, charging curves, and curves of electrooxidation in the adsorbed layer and also by cyclic voltammetry and steady-state polarization measurements. The DME adsorption is accompanied by dehydrogenation and destruction of its molecules to form a chemisorbed adsorbate that mainly consists of C1 species (HCO(ads) and/or CO(ads)) with (under certain conditions) a small amount of species that desorb at cathodic polarization. The adsorption and electrooxidation of DME are inhibited by adsorbed oxygen. The possible schemes of DME oxidation, where the reaction of DME chemisorption products with adsorbed oxygen-containing species is the limiting stage, are discussed.

• 出版日期2010-2