The hydrolysis of methyl glycolate catalyzed by commercial
cation-exchange
resin was studied in a stirred tank batch reactor. It was found that
001×7 resin was an effective catalyst for the hydrolysis of methyl
glycolate. The effects of catalyst loading, initial reactant ratio
and temperature have been examined in detail. The kinetics of glycolate
hydrolysis was evaluated by the use of the pseudohomogeneous model,
which was found to represent the kinetics fairly well, due to the
total dissociation of the active sulfonic acid group in swollen polymer
resin in the presence of water. The kinetics was expressed in terms
of activities and the activity coefficients were estimated by using
the group contribution method UNIFAC. The activation energy was found
to be 59.26 kJ/mol for 001×7 resin, indicating surface reaction
is the rate-controlling step.
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