Interaction of the small carboxylic acids CH3COOH and C2H5COOH with Pt(111) studied with helium atom scattering
Interaction of the small carboxylic acids CH3COOH and C2H5COOH with Pt(111) studied with helium atom scattering
复制标题
用氦原子散射研究小分子羧酸 CH3COOH 和 C2H5COOH 与 Pt(111) 的相互作用
DOI：
10.1063/1.1377887
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发表时间：
2001
影响因子：
4.4
通讯作者：
A. Graham
中科院分区：
文献类型：
--
作者：
A. Graham
用高分辨氦原子散射（HAS）测量了170K时乙酸和丙酸在Pt（111）表面的吸附、衍射和低频振动。乙酸和丙酸吸附在170 K作为孤立的分子，最初，与证据的一部分的分子的解离产生CO。在完成的单层氦衍射表明，分子是局部有序的特征长度尺度为3.6和4.5。通过比较氢化和氘化吸附分子的HAS飞行时间谱，可以确定乙酸酯和丙酸酯双齿组分的平行摇摆模式频率分别为12.6 meV和8.9 meV。
High resolution helium atom scattering (HAS) has been used to measure the adsorption, diffraction and low frequency vibrations of acetic and propionic acids adsorbed on the Pt(111) surface at 170 K. Acetic and propionic acid adsorb at 170 K as isolated molecules, initially, with evidence for the dissociation of a fraction of the molecules to produce CO. At the completion of the monolayer helium diffraction shows that the molecules are locally ordered with characteristic length scales of 3.6 A and 4.5 A. By comparing the HAS time-of-flight spectra for the hydrogenated and deuterated adsorbed molecules the parallel wagging mode frequencies for the acetate and propionate bidentate components could be determined to be 12.6 meV and 8.9 meV, respectively.