ACTIVATION-ENERGIES FOR THERMAL-DESORPTION OF HYDROXYL RADICALS FROM SINGLE-CRYSTAL PLATINUM(111) AND POLYCRYSTALLINE PLATINUM FOIL SURFACES

被引：20
|
作者：
HSU, DSY
HOFFBAUER, MA
LIN, MC
机构：
[1] US Naval Research Lab, Washington,, DC, USA, US Naval Research Lab, Washington, DC, USA
来源：
LANGMUIR | 1986年 / 2卷 / 03期
关键词：
DESORPTION - FLUORESCENCE - METAL FOIL - Surfaces;
D O I：
10.1021/la00069a008
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Apparent desorption energies were obtained for OH radicals formed in the associative reaction of chemisorbed O and H atoms on single-crystal Pt(111) and polycrystalline Pt foil surfaces by using the laser-induced fluorescence (LIF) technique coupled to an UHV surface science apparatus. As the reactant O/H gas mixture ratio is decreased from 10 to 0. 1, the OH desorption energies increase from 27 to 36 kcal/mol for the Pt(111) crystal and from 32 to 42 kcal/mol for the polycrystalline Pt foil.
引用
收藏
页码：302 / 304
页数：3
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