Catalytic Decomposition of Potassium Monopersulfate. Influence of Variables
Potassium 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.
[1] F. J. Rivas, F. J. Beltrán, F. Carvalho, and P. M. Alvarez, "Oxone
promoted wet air oxidation of landfill leachates," Ind. Eng. Chem. Res. ,
44, pp 749-758, 2005.
[2] J. E. Bennett, B. C. Gilbert, and J. K. Stell, "Mechanisms of peroxide
decomposition. EPR studies of the one electron oxidation of the
peroxymonosulphate anion and the reactions of SO5
-º," J. Chem. Soc.
Perkin Trans., 2, pp 1105, 1991.
[3] G. P. Anipsitakis, and D. D. Dionysiou, "Radical generation by the
interaction of transition metals with common oxidants," Environ. Sci.
Technol., 38, pp 3705-3712, 2004.
[4] J. Fernandez , P. A. Maruthamuthu, and J. Kiwi, "Photobleaching and
mineralization of Orange II by oxone and metal ions involving Fenton
like chemistry under visible light," J. Photochem & Photobiol. A,. 161,
pp 185, 2004.
[5] URL: www.dupont.com/oxone/
[6] G. P. Anipsitakis, and D. D. Dionysiou, "Radical generation by the
interaction of transition metals with common oxidants," Environ. Sci. &
Technol., 38, pp 3705-3712, 2004.
[7] F. J. Rivas, R. Garcia de la Calle, J. F. Garcia Araya, and O. Gimeno,
"Promoted wet air oxidation of polynuclear aromatic hydrocarbons," J.
Hazard. Mater., 41, pp 4672-4685, 2007.
[8] M. Carbajo, F. Beltrán, O. Gimeno, B. Acedo, and F. J. Rivas,
"Ozonation of phenolic wastewaters in the presence of a perovskite type
catalysts," J. Appl. Catal. Part B, 74, pp 203-210, 2007.
[9] Z. Zhang, and J. O. Edwards, "Chain lengths in the decomposition of
peroxomonosulfate catalyzed by cobalt and vanadium. Rate law for
catalysis by vanadium," Inorg. Chem., 31, pp 3514-3517, 1992.
[1] F. J. Rivas, F. J. Beltrán, F. Carvalho, and P. M. Alvarez, "Oxone
promoted wet air oxidation of landfill leachates," Ind. Eng. Chem. Res. ,
44, pp 749-758, 2005.
[2] J. E. Bennett, B. C. Gilbert, and J. K. Stell, "Mechanisms of peroxide
decomposition. EPR studies of the one electron oxidation of the
peroxymonosulphate anion and the reactions of SO5
-º," J. Chem. Soc.
Perkin Trans., 2, pp 1105, 1991.
[3] G. P. Anipsitakis, and D. D. Dionysiou, "Radical generation by the
interaction of transition metals with common oxidants," Environ. Sci.
Technol., 38, pp 3705-3712, 2004.
[4] J. Fernandez , P. A. Maruthamuthu, and J. Kiwi, "Photobleaching and
mineralization of Orange II by oxone and metal ions involving Fenton
like chemistry under visible light," J. Photochem & Photobiol. A,. 161,
pp 185, 2004.
[5] URL: www.dupont.com/oxone/
[6] G. P. Anipsitakis, and D. D. Dionysiou, "Radical generation by the
interaction of transition metals with common oxidants," Environ. Sci. &
Technol., 38, pp 3705-3712, 2004.
[7] F. J. Rivas, R. Garcia de la Calle, J. F. Garcia Araya, and O. Gimeno,
"Promoted wet air oxidation of polynuclear aromatic hydrocarbons," J.
Hazard. Mater., 41, pp 4672-4685, 2007.
[8] M. Carbajo, F. Beltrán, O. Gimeno, B. Acedo, and F. J. Rivas,
"Ozonation of phenolic wastewaters in the presence of a perovskite type
catalysts," J. Appl. Catal. Part B, 74, pp 203-210, 2007.
[9] Z. Zhang, and J. O. Edwards, "Chain lengths in the decomposition of
peroxomonosulfate catalyzed by cobalt and vanadium. Rate law for
catalysis by vanadium," Inorg. Chem., 31, pp 3514-3517, 1992.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:50263", author = "Javier Rivas and Olga Gimeno and Maria Carbajo and Teresa Borralho", title = "Catalytic Decomposition of Potassium Monopersulfate. Influence of Variables", abstract = "Potassium 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.", keywords = "Monopersulfate, Oxone®, Sulfate radicals, Watertreatment.", volume = "3", number = "9", pages = "438-5", }