A NEW CHEMICAL OSCILLATOR IN A NOVEL OPEN REACTOR - THE CLO2-I-2-ACETONE SYSTEM IN A MEMBRANE FED STIRRED-TANK REACTOR

The title reaction was carried out in a new type of semibatch reactor, where iodine or both iodine and chlorine dioxide are fed to the stirr ed bulk of the reactor through thin and selective silicon rubber membr anes. For model calculations the iodine inflow rate and the pseudo-fir st-order rate constant of the iodide production from iodine were deter mined experimentally. All other reactions and rate constants were take n from the literature. The period and the duration of the experimental ly found and theoretically predicted oscillations agree rather well. A n exact electrochemical interpretation of the amplitude of the electro de potential oscillations requires further research.