KINETICS OF A MONOMER MONOMER MODEL OF HETEROGENEOUS CATALYSIS

被引:16
作者
KRAPIVSKY, PL
机构
[1] Central Aerodynam. Inst., Zhukovsky
来源
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1992年 / 25卷 / 22期
关键词
D O I
10.1088/0305-4470/25/22/011
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The kinetics of an irreversible monomer-monomer model of heterogeneous catalysis is examined. In this model, two reactive species, A and B, absorb and stick to single sites of a catalytic substrate. Surface reactions are assumed to occur only between dissimilar species which are nearest neighbours on the substrate. The kinetics of the process is studied in the reaction-controlled limit, where the adsorption occurs readily so that the process is limited by the reaction rate. We map the monomer-monomer model of heterogeneous catalysis on to a kinetic Ising model and solve the model exactly in one dimension, where the dynamics tums out to be a superposition of zero-temperature Glauber spin flip dynamics and infinite-temperature Kawasaki spin exchange dynamics. Finally, we discuss the monomer-monomer processes with desorption.
引用
收藏
页码:5831 / 5839
页数:9
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