摘要
研究了CO在硫改性Pd(100)表面上的吸附动力学。在清洁Pd(100)表面上吸附CO时产生前兆态吸附分子,随着硫的加入,缩短了前兆态分子的寿命。当表面上硫覆盖度大于0.16时,基本上不形成CO前兆态分子。硫对Pd表面的这种影响比对Ni表面大。
The adsorption kinetics of CO on the surface of Pd(100) modified by sulfur has been investigated. On the clean Pd(100) surface, CO .precursor state molecules are formed during CO adsorption. With adding sulfur adatoms on Pd(100) surface, the lifetime of precursor molecules is reduced. When sulfur coverage on Pd(100) surface is larger than 0.16, there will be no precursor molecules formed. The influence of sulfur adatoms on Pd(100) surface is stronger than that on Ni surface.
