The Liquid Phase Oxidation of Acrolein. V. Effects of Water on the Oxidation of Acrolein

Abstract

Abstract Some water was added as a model to a reaction solution containing Co(acac)2 before the beginning of the reaction by two methods in order to examine the effects of water formed during the reaction. These two methods gave different phenomema in the induction periods and different oxygen absorption rates. From these results and those with Co(acac)2·2H2O, the water added is considered to act in two ways, increasing the reaction rate by the coordination with the catalyst and decreasing the reaction rate when not bonded with the catalyst. The latter effect is considered in detail on the basis of the oxygen absorption rate: −dO2/dt=k(acrolein)0.88. (catalyst)0.39(H2O)r, wherein r is −0.1 or −0.21. This rate equation accorded well with the derived rate equation considering the reaction phenomena and the interaction among the catalyst, acrolein, and water in the initiation reaction.