Micro- and macro-kinetics: their relationship in heterogeneous catalysis
Micro- and macro-kinetics: their relationship in heterogeneous catalysis
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DOI：
10.1007/bf01492288
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发表时间：
1994-09-01
影响因子：
3.6
通讯作者：
Campbell, Charles T.
中科院分区：
文献类型：
--
作者：
Campbell, Charles T.
试图模拟宏观稳态速率的催化反应的基础上的微观动力学参数的基本步骤，独立确定的模型，单晶金属催化剂的瞬态动力学数据，将进行审查。讨论了获得微动力学参数的方法。最近的研究，确定微动力学更复杂的模型催化剂组成的气相沉积金属岛单晶氧化物也将概述。最后，一个步骤的速率控制程度也将被数学定义。这一新的概念在动力学建模中是有用的，并且在将诸如速率控制步骤和速率限制步骤之类的术语放入更严格的框架中时是有用的。
Attempts to model macroscopic steady-state rates of catalytic reactions on the basis of microscopic kinetic parameters for elementary steps, determined independently from transient kinetic data on model, single-crystal metal catalysts, will be reviewed. The methods used in getting microkinetic parameters will be discussed. Recent studies which determine microkinetics for more complex model catalysts consisting of vapor-deposited metal islands on single-crystal oxides will also be outlined. Finally, the degree of rate control of a step will also be mathematically defined. This new concept is useful in kinetic modeling, and in putting terms such as rate-controlling step and rate-limiting step into a more rigorous framework.