Browsing by Author "Rivas, Javier"
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- Catalytic decomposition of potassium monopersulfate: influence of variablesPublication . Borralho, Maria Teresa; Gimeno, Olga; Rivas, Javier; Carbajo, MariaPotassium monopersulfate has been decomposed in aqueous solution in the presence of Co(II). The effect of the main operating variables has been assessed. Minimum variations in pH exert a considerable influence on the process kinetics. Thus, when no pH adjustment is considered, the actual effect of variables like initial monopersulfate and/or catalyst concentration may be hindered. As expected, temperature enhances the monopersulfate decomposition rate by following the Arrhenius law. The activation energy in the proximity of 85 kJ/mol has been obtained. Amongst the different solids tested in the monopersulfate decomposition, only the perovskite LaTi0.15Cu0.85O3 has shown a significant catalytic activity.
- Catalytic decomposition of potassium monopersulfate: the kineticsPublication . Borralho, Maria Teresa; Gimeno, Olga; Rivas, Javier; Carbajo, MariaPotassium monopersulfate has been decomposed in aqueous solution in the presence of Co(II). The process has been simulated by means of a mechanism based on elementary reactions. Rate constants have been taken from literature reports or, alternatively, assimilated to analogous reactions occurring in Fenton´s chemistry. Several operating conditions have been successfully applied.