Continuous Addition Kinetic Elucidation: Catalyst and Reactant Order, Rate Constant, and Poisoning from a Single Experiment

03 June 2022, Version 1
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

Kinetic analysis of catalytic reactions is a powerful tool for mechanistic elucidation but is often challenging to perform. Establishing order in a catalyst is achieved by running several reactions at different loadings, which is complicated by the challenge of maintaining consistent run-to-run experimental conditions. We present Continuous Addition Kinetic Elucidation (CAKE), which involves steadily injecting catalyst into the reaction, and following reaction progress over time to generate a plot whose shape is dependent only on the order in reactant and in catalyst. Modelling the curve (using a convenient web tool) allows the catalyst and reactant order to be determined, as well as the rate constant and the amount of any catalyst poison present.

Keywords

catalysis
mechanism
kinetic analysis
poisoning

Supplementary materials

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Supporting information
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Materials and Methods Table SI1 – SI3 Figures SI1 – SI4 References (31 – 42)
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Data for Figure 2
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Data for Figure 2
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Data for Figure 3
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Data for Figure 4
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Data for Figure 5
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Data for Figure 6
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Mathematical Results and Derivations
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Mathematical Results and Derivations; 79 equations
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Supplementary weblinks

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