首页> 外文OA文献 >KINETICS OF DISSOCIATIVE ADSORPTION OF FORMIC-ACID ON PT(100), PT(610), PT(210) AND PT(110) SINGLE-CRYSTAL ELECTRODES IN PERCHLORIC-ACID SOLUTIONS
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KINETICS OF DISSOCIATIVE ADSORPTION OF FORMIC-ACID ON PT(100), PT(610), PT(210) AND PT(110) SINGLE-CRYSTAL ELECTRODES IN PERCHLORIC-ACID SOLUTIONS

机译:高氯酸溶液中甲酸对PT(100),PT(610),PT(210)和PT(110)单晶电极的离解性吸附动力学

摘要

The kinetics of dissociative adsorption of HCOOH on Pt(100), Pt(610), Pt(210) and Pt(110) single-crystal electrodes has been investigated. The oxidation of dissociative adsorbate (DA) derived from the dissociative adsorption of HCOOH was used as a probe reaction together with the potential-step technique of short time windows. The quantity Q(ad) of DA produced at a given potential E(ad) and in a defined time window t(ad) of adsorption has been determined systematically. At fixed t(ad) peaked curves of Q(ad) versus E(ad) in the potential range between -0.25 and 0.25 V/SCE have been obtained on all four electrodes. The maximum rate of dissociative adsorption of HCOOH decreases in the order Pt(110) > Pt(210) > Pt(610) > Pt(100).
机译:研究了HCOOH在Pt(100),Pt(610),Pt(210)和Pt(110)单晶电极上的解离吸附动力学。源自HCOOH的解离吸附的解离吸附物(DA)的氧化与短时窗的电位步进技术一起用作探针反应。已经系统地确定了在给定电势E(ad)和定义的吸附时间窗口t(ad)下产生的DA的数量Q(ad)。在固定的t(ad)下,在所有四个电极上都获得了在(0.25)/0.25 V / SCE电位范围内Q(ad)与E(ad)的峰曲线。 HCOOH的最大离解吸附速率按Pt(110)> Pt(210)> Pt(610)> Pt(100)的顺序降低。

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