Kinetic Treatments for Catalyst Activation and Deactivation Processes based on Variable Time Normalization Analysis

Kinetic Treatments for Catalyst Activation and Deactivation Processes based on Variable Time Normalization Analysis
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基于变时间归一化分析的催化剂活化和失活过程的动力学处理

DOI:
10.1002/ange.201903878
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发表时间:
2019
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影响因子:
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通讯作者:
Martínez-Carrión A
Martínez-Carrión A
中科院分区:
--
文献类型:
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作者:
Martínez-Carrión A

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进展反应曲线受与主反应同时发生的催化剂活化和失活过程的影响。这些过程使反应的动力学分析复杂化,经常将研究人员引向错误的结论。我们报告的应用程序的两个动力学处理,基于可变时间归一化分析,涉及催化剂活化和失活过程的反应。当可以测量活性催化剂的量时,第一动力学处理允许从动力学曲线中去除诱导期或与催化剂失活相关的速率扰动的影响。当主反应的反应物顺序已知时,第二处理允许估计催化剂的活化或失活曲线。这两种处理方法都有利于催化剂活化或失活过程中反应的动力学分析。
Progress reaction profiles are affected by both catalyst activation and deactivation processes occurring alongside the main reaction. These processes complicate the kinetic analysis of reactions, often directing researchers toward incorrect conclusions. We report the application of two kinetic treatments, based on variable time normalization analysis, to reactions involving catalyst activation and deactivation processes. The first kinetic treatment allows the removal of induction periods or the effect of rate perturbations associated with catalyst deactivation from kinetic profiles when the quantity of active catalyst can be measured. The second treatment allows the estimation of the activation or deactivation profile of the catalyst when the order of the reactants for the main reaction is known. Both treatments facilitate kinetic analysis of reactions suffering catalyst activation or deactivation processes.
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