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化学学报
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化学学报 ›› 2002, Vol. 60 ›› Issue (4): 606-611. 上一篇    下一篇

研究论文

Pt-Mo电极上CO、甲醛和甲醇的电催化氧化-微分电化学质谱研究

王红森   

  1. 北京师范大学化学系.北京(100875)
  • 发布日期:2002-04-15

Electrocatalytic Oxidation of CO, Formaldehyde and Methanol on Pt- Mo Electrodes: A DEMS Study

Wang Hongsen   

  1. Department of Chemistry, Beijing Normal University.Beijing(100875)
  • Published:2002-04-15

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被引次数

2

利用微分电化学质谱（DEMS）研究了Mo修饰的Pt电极上CO、甲醛和甲醇的电催 化氧化，证实了Mo(IV)是催化活性样品，而且它只对弱吸附CO的氧化起催化作用， 对强吸附CO的氧化没有催化活性。在低于0.4 V的电位下，吸附在Pt电极上的Mo结 甲醇和甲醛的催化氧化是通过弱吸附CO的氧化路径进行的。

关键词: 钼, 铂, 电极, 甲醛, 甲醇, 电催化

The electrocatalytic oxidation of carbon monoxide, formaldehyde and methanol on the Mo modified Pt electrode was investigated using differential electrochemical mass spectrometry (DEMS). It has been confirmed that Mo(IV) is catalytically active species only for the oxidation of weakly adsorbed CO, but catalytically inactive for the oxidation of strongly adsorbed CO. At the potentials lower than 0.4 V, the electrocatalytic oxidation of formaldehyde and methanol by Mo species adsorbed on Pt proceeds via weakly adsorbed CO.

Key words: MOLYBDENUM, PLATINUM, ELECTRODE, FORMALDEHYDE, METHANOL, ELECTRO-CATALYSIS

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