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Hydrolysis of imidazole and 2‐chloropyridine under subcritical and supercritical water conditions
Author(s) -
BarreraVentura Carmen,
Salvatierra Dolors,
Giralt Francesc,
Giralt Jaume
Publication year - 2013
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.21742
Subject(s) - supercritical fluid , imidazole , hydrolysis , chemistry , reaction rate constant , solvent , kinetics , organic chemistry , inorganic chemistry , physics , quantum mechanics
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. were respectively attained at the highest temperature after 30 min of reaction. © 2012 Canadian Society for Chemical Engineering