Sequential oscillations in B-Z oscillating system with vanillin as substrate
Authors/Creators
Description
Department of Chemistry, University College of Science, University of Calcutta, 92 Acharya Prafulla Chandra Road, Calcutta-700 009, India
Manuscript received 15 December 1998, revised 18 March 1999, accepted 19 March 1999
Sequential oscillations have been observed in B-Z oscillating system containing vanillin as a single substrate as also along with acetone. Ferroin and Mull ions have been used as catalysts both separately and in combination. Only Mnll ions have been found to be suitable for inducing second phase oscillations. Oscillation parameters have been determined potentiometrically. The effects of variations in the concentrations of acid, acetone and vanillin have been investigated. The mechanism of the reaction has been discussed. It is most likely that sequential oscillations are due to vanillin and its oxidation/ bromination products.