Effect of alcohol concentration and electrode composition on the ethanol electrochemical oxidation

被引：20

作者：

Bergamaski, K ^{[1
]}

Gomes, JF ^{[1
]}

Goi, BE ^{[1
]}

Nart, FC ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim, BR-13560970 Sao Carlos, SP, Brazil

来源：

ECLETICA QUIMICA | 2003年 / 28卷 / 02期

关键词：

electrocatalysis; platinum-rhodium; DEMS; reaction pathways;

D O I：

10.1590/S0100-46702003000200011

中图分类号：

学科分类号：

摘要：

The electrochemical oxidation on platinum and platinum rhodium bimetallic electrodes was studied by Differential Electrochemical Mass Spectrometry for several ethanol concentrations in solution. It is found that increasing the ethanol concentration the production of the partially oxidized products (acetaldehyde) increases as the concentration increases. On the other hand, addition of 25% at. of rhodium increases the full oxidation to CO2. Another interesting result observed is a correlation between the intensity of the dehydrogenations peak at 0.3 V vs. RHE and the CO2 yield for the different ethanol concentration studied.

引用

页码：87 / 92

页数：6

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