Kinetics of the synthesis of butyl phthalates over methane sulfonic acid catalyst
J. Skrzypek, M. Kulawska, M. Madej-Lachowska, H. Moroz
React. Kinet. Mech. Cat., 100, 301-307 (2010)
Abstract
Investigations in an isothermal, semibatch reactor have been conducted to find out kinetic parameters for the synthesis of dibutyl phthalate (DBP) and diisobutyl phthalate (DIBP) from phthalic anhydride and butyl alcohol or isobutyl alcohol,. The first stage, the formation of monoester, is very fast and irreversible. The second stage of the process, the esterification of monoester to diester, is slow. This reaction rate appears to be first-order with respect to the monoester and the rate does not depend on the concentration of alcohol.
