Chemical oscillations in the metal ion-catalyzed bromate-4-aminophenol reaction

摘要: Temporal oscillations of the bromate-4-aminophenol system have been studied in presence four different catalysts: tris(1,10-phenanthroline)iron(II) sulfate (ferroin), Ce(III), Mn(II), and Fe(II). Iransient temporal were observed catalyzed systems when reactions conducted a stirred batch reactor. The induction time was prolonged by ferroin, but it shortened Ce(III)- Mn(II)-catalyzed systems. On other hand, number peaks significantly decreased ferroin. development oscillatory behaviour found to be more sensitive ratio bromate 4-aminophenol concentration than their absolute concentrations. reaction rates with Ce(IV) ferritin measured directly spectroscopic methods sulfuric acid medium.