Structural effects in the kinetic behavior of the monomer-dimer surface reaction over nondeterministic fractal surfaces

被引：1
|
作者：
Cortés, J [1 ]
Valencia, E [1 ]
机构：
[1] Univ Chile, Fac Ciencias Fis & Matemat, Santiago, Chile
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2003年 / 267卷 / 02期
关键词：
surface structure; fractal surface; solid-gas interfaces; surface chemical reaction; Monte Carlo simulations; catalysis; computer simulations; models of surface chemical;
D O I：
10.1016/S0021-9797(03)00456-9
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：
A study is made of the segregation effect of adsorbed species related to the inner structure of two bidimensional adsorbent fractals, the incipient percolation cluster (IPC) and the backbone of the IPC, and their connection with the rate-determining step of the kinetic mechanism of the monomer-dimer (MD) surface reaction on those fractals. Production, R-AB, is proportional to the concentration of A in the gas phase gamma(A) and to the fraction of vacant superficial sites x(E) (R-AB = gamma(A)x(E)), and it is shown that adsorption of the monomer is the rate-controlling step of the reaction mechanism. (C) 2003 Elsevier Inc. All rights reserved.
引用
收藏
页码：391 / 396
页数：6
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