Catalytic activity of the RuO2(100) surface in the oxidation of CO

被引：43

作者：

Knapp, M

Seitsonen, AP

Kim, YD

Over, H

机构：

[1] Univ Giessen, Dept Chem Phys, D-35392 Giessen, Germany

[2] Univ Zurich, Dept Chem Phys, CH-8057 Zurich, Switzerland

[3] Univ Konstanz, Dept Phys, D-78457 Constance, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 38期

关键词：

D O I：

10.1021/jp0497110

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 RuO2(100) surface exposes regions with (1 x 1) and c(2 x 2) symmetry. The (1 x 1) phase is very active in oxidizing CO, while the c(2 x 2) phase is inactive because CO does not adsorb on the c(2 x 2) phase above 100 K. This experimental finding suggests the absence of undercoordinated 1f-cus Ru sites on the RuO2-(100)-c(2 x 2) surface. Low-energy electron diffraction indicates that the c(2 x 2) phase is a reconstructed (1 x 1) phase. The catalytically inactive c(2 x 2) phase plays an important role in the deactivation of Ru-based catalysts.

引用

页码：14392 / 14397

页数：6

共 35 条

[1] Ruthenium as oxidation catalyst:: bridging the pressure and material gaps between ideal and real systems in heterogeneous catalysis by applying DRIFT spectroscopy and the TAP reactor [J].