A dual-phase oscillatory behavior in Belousov–Zhabotinsky system with vanillin as the substrate
✍ Scribed by V. Sridevi; R. Ramaswamy
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 126 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0538-8066
No coin nor oath required. For personal study only.
✦ Synopsis
Dual-phase oscillations are observed in Belousov-Zhabotinsky system with 4hydroxy-3-methoxybenzaldehyde (vanillin) as the substrate and manganous sulphate or ammonium Ce(IV) sulphate as the catalyst. The nonoscillatory period of time between the two phases decreases with increase in the concentration of the catalyst and the substrate. Under uncatalyzed and ferroin catalyzed conditions the system exhibits single-phase oscillations. The first-phase oscillations are due to vanillin whereas the second-phase oscillations are brought about by 4-hydroxy-3-methoxybenzoic acid (vanillic acid) formed during the course of the first-phase reactions. The reactions are explained with relevant steps of the FKN mechanism.