Electrocatalytic Reduction of Carbon Monoxide on Cu, Fe, Brass Electrode in  Solid Electrolyte Cells

Chem. J. Chinese Universities

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Electrocatalytic Reduction of Carbon Monoxide on Cu, Fe, Brass Electrode in Solid Electrolyte Cells

HAO Jin-Ku*, CAO Ying-Yu, SHEN Yong-Li, ZHUGE Shang-Qi, BAI Dong-Hua

School of Chemistry and Life Science, Tianjin Normal University, Tianjin 300074, China

Received:2005-04-06 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
Contact: HAO Jin-Ku

Abstract

Abstract: A new electrolysis system was developed for the conversion of CO to formaldehyde and ethylene, in which the electrochemical reduction took place at the two-phase(gas/solid) interface on Cu, Fe and Brass electrodes with α-Zr(HPO₄)₂H₂O(ZrP) used as proton-conducting solid electrolyte at room temperature and atmospheric pressure. The products for eletroreduction of CO depended on the different metal electrodes and the current densities. Considerable faradic efficiency was observed for HCHO at Cu/ZrP cathode electrode over a wide range of current density. And the faradic efficiency of HCHO increased with the increase of the current density and approached 29.0% at a current density of 100 mA·cm^-2. The Cu/ZrP cathodic surface reaction mechanism was proposed, i.e., oxygencon-taining Cu…HCO was formed and the fine product HCHO was obtained. The faradic efficiency of C₂H₄ increased with the increase of the current density and approached 15.0% at a current density of 100 mA·cm^-2 on Fe/ZrP cathode electrode. The Fe/ZrP surface reaction mechanism was proposed, that was, radical coordinate Fe…H₂ was formed and the product C₂H₄ was obtained.

Key words: Electrocatalysis, Reduction, CO, Solid electrolyte

CLC Number:

O646.5

TrendMD:

HAO Jin-Ku*, CAO Ying-Yu, SHEN Yong-Li, ZHUGE Shang-Qi, BAI Dong-Hua. Electrocatalytic Reduction of Carbon Monoxide on Cu, Fe, Brass Electrode in Solid Electrolyte Cells[J]. Chem. J. Chinese Universities, doi: .

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Electrocatalytic Reduction of Carbon Monoxide on Cu, Fe, Brass Electrode in Solid Electrolyte Cells

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