Mechanistic studies of the potential oscillation and induction period in the oxidation of formic acid on platinum
Mechanistic studies of the potential oscillation and induction period in the oxidation of formic acid on platinum
复制标题
甲酸在铂上氧化的电位振荡和诱导期机理研究
DOI：
10.1016/0013-4686(92)80009-b
复制
发表时间：
1992
影响因子：
6.6
通讯作者：
H. Okamoto
中科院分区：
文献类型：
--
作者：
H. Okamoto
用伏安法研究了甲酸在铂上氧化的电位振荡及其诱导期的反应机理。反应条件为恒电流，溶液为酸性。诱导期是由于吸附的有毒物质，标记为D1，已被确定为CO线性吸附在Pt的量不足。虽然缓慢的电位增加在0.5vs rheduring振荡是由于积累的D1，快速增加和减少之间的0.6和0.8 V是由于不同的吸附物种，标记为D2。该物种主要是有毒的，在约0.6 V，而它主要是反应性的D1在振荡电位上限，0.7-0.8 V的D2最可能的候选人是水吸附相邻的CO。
The reaction mechanism of the potential oscillation and its induction period of formic acid oxidation on platinum is studied using a voltammogram. The reaction conditions are galvanostatic and the solution is acidic. The induction period is caused by an insufficient amount of adsorbed poisonous species, labelled D1, which has been identified as CO linearly adsorbed on Pt. Although slow potential increases at around 0.5vs rheduring the oscillation are due to the accumulation of D1, rapid increases and decreases between 0.6 and 0.8 V are due to a different adsorbed species, labelled D2. This species is mainly poisonous at approximately 0.6 V, while it is mainly reactive to D1at the upper oscillation potential limit, 0.7-0.8 V. The most probable candidate for D2is water adsorbed adjacent to CO.