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Hydrolysis of imidazole and 2-chloropyridine under subcritical and supercritical water conditions

Authors

  • Carmen Barrera-Ventura,

    1. Department d'Enginyeria Quimica, Universitat Rovira i Virgili, Av. dels Països Catalans 26, 43007 Tarragona, Catalunya, Spain
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  • Dolors Salvatierra,

    1. Department d'Enginyeria Quimica, Universitat Rovira i Virgili, Av. dels Països Catalans 26, 43007 Tarragona, Catalunya, Spain
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  • Francesc Giralt,

    Corresponding author
    1. Department d'Enginyeria Quimica, Universitat Rovira i Virgili, Av. dels Països Catalans 26, 43007 Tarragona, Catalunya, Spain
    • Department d'Enginyeria Quimica, Universitat Rovira i Virgili, Av. dels Països Catalans 26, 43007 Tarragona, Catalunya, Spain.
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  • Jaume Giralt

    1. Department d'Enginyeria Quimica, Universitat Rovira i Virgili, Av. dels Països Catalans 26, 43007 Tarragona, Catalunya, Spain
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Abstract

Imidazole and 2-chloropyridine were used as model molecules to investigate the acid hydrolysis kinetics of agrochemicals in high-temperature water in a batch reactor system at 28 MPa. Pseudo-first-order hydrolysis reaction rate constants for the acid hydrolysis of Imidazole and 2-chloropyridine were determined in the temperature ranges 200–600 and 400–575°C, respectively, at 28 MPa. Rate constants for both compounds increased with temperature with a local maximum observed at around 400°C due to changes in the physical properties of the solvent. Imidazole and 2-chloropyridine conversions of 0.95 and 0.99999 were respectively attained at the highest temperature after 30 min of reaction. © 2012 Canadian Society for Chemical Engineering

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