Premium
Kinetics of esterification of the levulinic acid with n ‐hexanol, n ‐octanol, and 2‐ethylhexanol in the presence of methanesulfonic acid as a catalyst under nonisothermal conditions
Author(s) -
Hamryszak Łukasz,
Grzesik Miroslaw
Publication year - 2021
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.21425
Subject(s) - chemistry , methanesulfonic acid , levulinic acid , catalysis , alcohol , activation energy , isothermal process , kinetics , octanol , organic chemistry , thermodynamics , partition coefficient , physics , quantum mechanics
Abstract The levulinic acid was esterified with alcohol at an alcohol to acid molar ratio of 3:1, 5:1, and 10:1 in the presence of a 0.1 wt% methanesulfonic acid catalyst. During esterification, the temperature was changed linearly from 373 to 428 K and its average change was 4.5 K/min. The authors stated that reactions were of second order and that the activation energy ( E ) decreased from 61 to 46 kJ/mol in the following alcohol sequence: n ‐hexanol > n‐ octanol > 2‐ethylhexanol. The fitting errors varied between 3.8% and 6.4%. The time of experiment carried out under nonisothermal condition is five to 15 times shorter than that conducted under isothermal conditions. A smaller number of experimental series also determines a significantly lower cost of such research. The results of such study are the precise form of the kinetic equation, which is indispensable in design and optimization of industrial‐scale chemical reactors.