Kinetic modeling using temperature as an on-line measurement: Application to the hydrolysis of acetic anhydride, a revisited kinetic model

•Thermal characterization of a calorimeter.•Kinetic model using reaction temperature as online observable.•Kinetic model for acetic anhydride hydrolysis taking into account autocatalytic effect. The use of calorimeter in chemical reaction engineering is a powerful tool to estimate kinetic constants....

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Bibliographic Details
Published in:Thermochimica acta 2019-12, Vol.682, p.178409, Article 178409
Main Authors: Garcia-Hernandez, Elizabeth Antonia, Souza, Camilla Ribeiro, Vernières-Hassimi, Lamiae, Leveneur, Sébastien
Format: Article
Language:English
Subjects:
Calorimeter
Chemical engineering
Chemical Sciences
Exothermic reaction
Isoperibolic mode
Kinetic modeling
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Summary:•Thermal characterization of a calorimeter.•Kinetic model using reaction temperature as online observable.•Kinetic model for acetic anhydride hydrolysis taking into account autocatalytic effect. The use of calorimeter in chemical reaction engineering is a powerful tool to estimate kinetic constants. Indeed, reaction temperature is used as an online analytical signal. Nevertheless, the thermal characterization of the calorimeter must be done to avoid wrong estimation. The hydrolysis of acetic anhydride was used as a reaction model in a handmade calorimeter, because it is a fast and exothermic reaction. Several research groups have studied this reaction without taking into account the autocatalytic effect due to the production of acetic acid. To fill this gap, a kinetic model was developed by taking this phenomenon and in a thermally characterized handmade calorimeter. The estimated kinetic constants in the handmade calorimeter were found to be similar than in the established calorimeter Mettler Toledo RC1.
ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2019.178409