A linear free energy relationship for gas-solid interactions: Correlation between surface rate constant and diffusion coefficient of oxygen tracer exchange for electron-rich perovskites

被引：72
作者：
Merkle, R
Maier, J
Bouwmeester, HJM
机构：
[1] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
[2] Univ Twente, Dept Sci & Technol, Enschede, Netherlands
[3] Univ Twente, MESA, Res Inst Nanomat, Enschede, Netherlands
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2004年 / 43卷 / 38期
关键词：
charge transfer; defect chemistry; diffusion; kinetics; oxygen exchange;
D O I：
10.1002/anie.200460081
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The variation of the activation enthalpy for surface oxygen exchange 1/2O2 + VO..⇄OOx + 2 h. with sample composition in (Ln,Sr)(Mn,Fe,Co)O3-z perovskites is rigidly coupled to the variation of the overall reaction enthalpy (see picture). This is the first mechanistically well-established example of a Hammett-like relationship for inorganic gas-solid reactions.
引用
收藏
页码：5069 / 5073
页数：5
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