INFLUENCE OF GLOBAL COUPLING THROUGH THE GAS-PHASE ON THE DYNAMICS OF CO OXIDATION ON PT(110)

被引：39

作者：

FALCKE, M

ENGEL, H

机构：

[1] Institut für Theoretische Physik, AG Dissipative Strukturen, Technische Universität Berlin, 12489 Berlin, Rudower Chaussee 5

来源：

PHYSICAL REVIEW E | 1994年 / 50卷 / 02期

关键词：

D O I：

10.1103/PhysRevE.50.1353

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

In CO oxidation on platinum single-crystal surfaces spatial coupling takes place via two basic mechanisms: locally by surface diffusion of mobile adsorbates and globally by pressure changes in the gas phase. The effect of these two competing coupling modes on the dynamics of the reaction is studied using a reaction-diffusion model supplemented by an equation for the balance of the partial pressure of CO in the gas phase. The integral reaction rate and the associated spatiotemporal patterns of CO coverage show strong influence of coupling through the gas phase.

引用

页码：1353 / 1359

页数：7

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