HYDROGENATION OF CARBIDIC CARBON ON NI(111)

被引：8

作者：

FINETTI, P

AGOSTINO, RG

DEROSSI, A

SANTONI, A

ROSEI, R

机构：

[1] UNIV TRIESTE,DIPARTMENTO FIS,I-34127 TRIESTE,ITALY

[2] LAB TECNOL AVANZATE SUPERFICI & CATALISI,I-34012 TRIESTE,ITALY

来源：

SURFACE SCIENCE | 1992年 / 262卷 / 1-2期

关键词：

D O I：

10.1016/0039-6028(92)90452-C

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：

We have investigated the depletion kinetics of carbidic carbon on Ni(111) exposed to high pressure (100 mbar) molecular hydrogen in the temperature range 348-373 K by means of Auger electron spectroscopy (AES). The experimental kinetics could be fitted with a simple exponential function. The activation energy and the preexponential factor resulted to be 20.8 +/- 1.4 kcal/mol and 1.1 x 10(10.0 +/- 0.8) s-1, respectively. Results obtained by a combined technique of numerical simulation and data fitting lead to a reaction picture dominated by one single rate-determining hydrogenation step.

引用

页码：1 / 7

页数：7

共 17 条

[1] CO DISSOCIATION AND RECOMBINATION REACTIONS ON NI(100) [J].