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DOI: 10.1055/s-0043-1777286
Kinetic Study of the Acylation Reaction of Dibutylcarbamyl Chloride and Dibutylamine
Autoren
Funding We are grateful to the Zhejiang Provincial Key R&D Project (Grant. No. 2020C03006 & 2019-ZJ-JS-03) for financial support.
Abstract
Tetrabutylurea (TBU) is mainly used as a working liquid in the preparation of hydrogen peroxide via the anthraquinone process. It is reported that dibutylamine (A) reacts with dibutylcarbamyl chloride (B) to produce TBU in the presence of triphosgene, which is the decisive step of the reaction. In this study, we aimed to investigate the reaction kinetics of the decisive step to gain more insight into the reaction. The reaction order as well as the pre-exponential factors (A) and the activation energies (E a) were determined. The kinetic study suggested that the total order of the reaction is second. E a = 5.4 × 104 J/mol, A = 1.5257 × 107 L/(mol × min), calculated through a second-order kinetics model. The accuracy and applicability of the kinetic model were verified by serval experiments, showing that enhancing reaction temperature could shorten the reaction time and increase the conversion rate.
Publikationsverlauf
Eingereicht: 30. Juli 2023
Angenommen: 01. November 2023
Artikel online veröffentlicht:
04. Dezember 2023
© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)
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