AN EXPERIMENTAL-STUDY OF THE INTERACTION OF HYDROGEN WITH THE MG(0001) SURFACE

被引：67

作者：

SPRUNGER, PT

PLUMMER, EW

机构：

[1] Department of Physics, University of Pennsylvania, Philadelphia

来源：

CHEMICAL PHYSICS LETTERS | 1991年 / 187卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2614(91)90436-D

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The interaction of atomic and molecular hydrogen with the (0001) surface of magnesium has been studied using EELS, TDS, work-function measurements, and core-level spectroscopy. No evidence for molecular or dissociative adsorption of H2 is observed at the substrate temperature investigated (> 110 K). At 110 K, atomic hydrogen is bound to the surface in a strongly chemisorbed state (surface hydride), which is a metastable phase. When the substrate is annealed to 425 K, no desorption occurs but the system converts irreversibly to a chemisorbed phase wherein the hydride characteristics are absent. The results are compared to existing theoretical studies.

引用

页码：559 / 564

页数：6

共 30 条

[1] SURFACE ELECTROMAGNETIC-FIELDS [J].