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

页码：302 / 304

页数：3