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- Title
Effect of bromide concentration on the induction period of the cerium-catalysed Belousov-Zhabotinsky oscillating reaction.
- Authors
Kwanjira Panplado; Premkamon Intasri; Atchara Sirimungkala; Titikan Somboon
- Abstract
Temporal oscillations of the cerium(IV)-catalysed Belousov-Zhabotinsky reaction under addition of various Br- concentrations are investigated. The relationship between the induction period and Br- concentration, which is a controlling species in the BZ oscillating reaction, is reported. The oscillations of the Ce(IV) catalyst are followed by using UV-Vis spectrophotometric methods under closed batch and oxygen free systems. Experimental observations demonstrate that increasing Br- concentration decreases the induction period exponentially, whereas it increases the oscillation period linearly. The results reveal that the oscillations without induction period are observed by the addition of 1.0 × 10-2 M Br- concentration. Addition of Br- into the BZ solution mainly involves the process A of the FKN mechanism. Numerical results reveal that the addition of Br- increases the production of BrMA, but decreases the induction period.
- Subjects
CERIUM; SPECTROPHOTOMETRY; OXYGEN; OSCILLATIONS; CATALYSTS
- Publication
ScienceAsia, 2018, Vol 44, Issue 2, p102
- ISSN
1513-1874
- Publication type
Article
- DOI
10.2306/scienceasia1513-1874.2018.44.102