The effect of flow rate on the oscillatory activation energy of an oscillating reaction

Autor(es)

Monteiro, Emily V. ; Varela, Hamilton ; Faria, Roberto B.

• Tipo de documento: Artigo Científico
• Fonte: Chemical Physics Letters; v. 684, p. 219-224, SEP 16 2017.
• Citações Web of Science: 1

Resumo

The simultaneous influence of temperature and flow rate (k(0)) in the oscillatory regime of the bromate-oxalic acid-acetone-Ce(III) oscillating reaction was investigated. The influence of temperature was evaluated in terms of the oscillatory activation energy (E-omega), which was determined at different flow rates. Increasing k(0), the oscillatory activation energy is decreased, tending to a limit value, E-omega infinity. The sensitivity of E-omega, with k(0) is described by the parameter eta = dE omega/d(1/k(0)). E-omega infinity and eta are global properties of any particular oscillating reaction and describes a correlation between the dynamical behavior and temperature, and should be used when comparing different oscillating reactions. (C) 2017 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/16930-7 - Eletrocatálise V: processos eletrocatalíticos de interconversão entre as energias química e elétrica
• Beneficiário: Edson Antonio Ticianelli
• Modalidade de apoio: Auxílio à Pesquisa - Temático