Orientational Effects in Dissociative Adsorption/Associative Desorption Dynamics of H2(D2) on Cu and Pd
Orientational Effects in Dissociative Adsorption/Associative Desorption Dynamics of H2(D2) on Cu and Pd
复制标题
H2(D2) 在 Cu 和 Pd 上解离吸附/缔合解吸动力学的取向效应
DOI：
10.1002/chin.200021250
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
A. Okiji
中科院分区：
文献类型：
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作者：
W. Diño;H. Kasai;A. Okiji
摘要 随着用于研究固体表面各种动力学过程的精密实验技术的出现，例如初始分子态制备、能量和态分辨探测技术，固体表面动力学过程的研究现已处于实验研究观察结果与理论预测之间有更直接联系的阶段。可以毫不夸张地说，在表面领域我们拥有一个物理学的“游乐场”，对固体表面发生的动力学过程（如上述那些过程）的研究是一个充满新发现和对新奇物理现象进行观测的丰富领域，充满了诸多可能性。这些反应最自然的选择测试粒子是氢，它在现代物理学的发展中一直起着核心作用。在影响氢 - 固体表面反应动力学的若干动力学因素（例如，反应参与者——氢分子和固体表面的相对坐标、分子内部自由度、表面自由度）中，一个重要因素是分子取向。在这篇综述中，我们将考虑H₂（D₂）分子在铜和钯表面上的解离吸附以及在这些表面上的缔合脱附动力学，铜和钯表面分别是活化体系和非活化体系的典型例子，并讨论取向如何影响氢在这些表面上的动力学以及如何引发诸如导向和动态量子滤波等动力学过程。
Abstract With the advent of sophisticated experimental techniques to study various dynamical processes on solid surfaces, e.g., initial molecular state preparation, energy- and state-resolved detection techniques, the study of dynamical processes occurring on solid surfaces is now at the stage where there is a more direct link between what experimental studies observe and what theory predicts. It would not be an exaggeration to say that, in surfaces we have a playground for physics, and the study of dynamical processes occurring on solid surfaces, such as the ones mentioned above, is a rich field for new discoveries and observations of novel physical phenomena, filled with many possibilities. The most natural test particle of choice for these reactions is hydrogen , which has always played a central role in the development of modern physics. Of the several dynamical factors that influence the dynamics of hydrogen-solid surface reactions (e.g., relative coordinates of reactions partners—hydrogen molecule and solid surface, molecular internal degrees of freedom, surface degrees of freedom), one important factor is molecular orientation. In this review, we will consider the dissociative adsorption and associative desorption dynamics of H 2 (D 2 ) molecules on/from Cu and Pd surfaces, which are typical examples of an activated and a non-activated system, respectively, and discuss how the orientation affects the dynamics of hydrogen on these surfaces and brings about such dynamical processes as steering and dynamical quantum filtering.