HYDROXYL RADICAL FORMATION DURING METHANE OXIDATION AND WATER DECOMPOSITION ON PT MEASURED BY LASER-INDUCED FLUORESCENCE

被引：19

作者：

MOONEY, CE ^{[1
]}

ANDERSON, LC ^{[1
]}

LUNSFORD, JH ^{[1
]}

机构：

[1] TEXAS A&M UNIV SYST,DEPT CHEM,COLLEGE STN,TX 77843

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 16期

关键词：

D O I：

10.1021/j100169a006

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：

Laser-induced fluorescence (LIF) was used to monitor the formation and desorption of OH. radicals over a Pt wire during the catalyzed oxidation of methane. As in the Pt-catalyzed oxidation of hydrogen, the apparent activation energy for OH. desorption, E(a), depends strongly on the fuel-to-oxygen ratio, varying from approximately 33 kcal/mol at high O2/CH4 values to approximately 56 kcal/mol at low O2/CH4 ratios. The reaction of surface oxygen with D2 during the decomposition of H2O on Pt shows that the surface oxygen concentration influences E(a) for OH. desorption on platinum.

引用

页码：6070 / 6072

页数：3