• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Symposium on Hydrogen at Surface and Interfaces, May, 2000, Toronto >KINETIC ANALYSIS OF EFFECTS OF ADSORBED S-SPECIES ON H SORPTION INTO Pd FROM UPD AND OPD H
【24h】

KINETIC ANALYSIS OF EFFECTS OF ADSORBED S-SPECIES ON H SORPTION INTO Pd FROM UPD AND OPD H

机译：吸附的S物种对UPD和OPD H中H吸附为Pd的影响的动力学分析

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Studies of the effects of sulfide poison on H sorption into Pd can be conducted without the complications of processes involved in cathodic H_2 evolution since UPD H can be generated as the initial chemisorbed source of H below the H-2 reversible potebntial, unlike the situation at e.g. Fe, mild-steel, Ni, Ti, etc. By means of a previously developed kinetic fitting procedure, the effects of S~(2-) and HS~- ions on the rates of individual steps in the HER under OPD conditions resulting in H sorption, are compared with the situation involving only sorption from UPD states of H, i.e. at electrode potentials positive to that of the HER reversible potential. It is shown that the expected 1:1 ratio correspondence between the H adsorption and H permeation rates arises almost quantitatively over the UPD region for which, in both the presence and absence of sulfide species, electrodeposition of H is found to be the rate-determining step in the overall H permeation process. Over the OPD potential region, sorption of H into Pd arises both from the OPD and the UPD H.
机译：可以进行硫化物毒物对H吸附到Pd中的影响的研究，而不会引起阴极H_2演变过程的复杂性，因为UPD H可以作为低于H-2可逆电位的H的初始化学吸附源产生，这与H-2可逆电位不同。例如铁，低碳钢，镍，钛等。通过先前开发的动力学拟合程序，在OPD条件下，S〜（2-）和HS〜-离子对HER中单个步骤的速率的影响导致将H吸附与仅从H的UPD状态（即在与HER可逆电位正向的电极电位）上吸附有关的情况进行比较。结果表明，在UPD区域几乎定量地出现了H吸附率和H渗透率之间的1：1比例对应关系，在存在和不存在硫化物的情况下，H的电沉积都是决定速率的因素。整个H渗透过程中的步骤。在OPD电位区域上，OPD和UPD H都导致H吸附到Pd中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号