在乙烯及其与氢气和一氧化碳的混合物中，重构的 Pt(100)-hex 表面的迁移。

Mobility on the reconstructed Pt(100)-hex surface in ethylene and in its mixture with hydrogen and carbon monoxide.

机构信息

Department of Chemistry, University of California, Berkeley, California 94720, USA.

出版信息

Chem Commun (Camb). 2013 Aug 7;49(61):6903-5. doi: 10.1039/c3cc42312c. Epub 2013 Jun 26.

Abstract

By using high-pressure scanning tunneling microscopy and ambient-pressure X-ray photoelectron spectroscopy, we studied the mobility along with composition, structure and reactivity on the Pt(100)-hex surface. Adsorbates are mobile under 1 Torr of C2H4 and C2H4-H2 mixtures, but adding 3 mTorr of CO quenches the mobility. Ethylene-related adsorbates can also weaken Pt-Pt bonds and thus facilitate displacements in the hexagonal layer.

摘要

我们采用高压扫描隧道显微镜和常压 X 射线光电子能谱研究了 Pt(100)-hex 表面的迁移率以及组成、结构和反应性。在 1 托的 C2H4 和 C2H4-H2 混合物中，吸附物是可移动的，但添加 3 毫托的 CO 会使迁移率降低。乙烯相关的吸附物也可以削弱 Pt-Pt 键，从而促进六角层中的位移。