Decomposition of NH3 on Ru(11(2)over-bar1)

被引：35
作者：
Dietrich, H [1 ]
Jacobi, K [1 ]
Ertl, G [1 ]
机构：
[1] MAX PLANCK GESELL,FRITZ HABER INST,D-14195 BERLIN,GERMANY
来源：
SURFACE SCIENCE | 1996年 / 352卷
关键词：
chemisorption; dissociation; electron energy loss spectroscopy; high index single crystal surfaces; ruthenium; thermal desorption spectroscopy; vibrations of adsorbed molecules;
D O I：
10.1016/0039-6028(95)01120-X
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 thermal decomposition of NH3 was studied on the open Ru(11 (2) over bar 1) surface using high-resolution electron energy loss spectroscopy (HREELS) and thermal desorption spectroscopy (TDS), For small NH3 coverages up to 0.25 of a monolayer, NH3 decomposes completely during annealing of the sample. At higher coverages molecular desorption is also observed. The dehydrogenation gives rise to sharp peaks in the H-2 TD spectra. NH2, NH, and N are identified using HREELS. A translational mode of NH3 is observed at 15 meV.
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页码：138 / 141
页数：4
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