INVESTIGADORES
CADUS Luis Eduardo
artículos
Título:
LANTHANUM-BASED PEROVSKITES AS CATALYST FOR THE OZONATION OF SELECTED ORGANIC COMPOUNDS
Autor/es:
ORGE, C. A.; ORFAO J. J. M.; PEREIRA FERNANDO; BARBERO BIBIANA P.; CADUS, LUIS E.
Revista:
APPLIED CATALYSIS B-ENVIRONMENTAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2013 vol. 140 p. 426 - 432
ISSN:
0926-3373
Resumen:
The ozonation of two model compounds (oxalic acid and dye C. I. Reactive Blue 5) was carried outin the presence of La containing perovskites prepared by the citrate method. With the exception ofLaFe0.9Cu0.1O3, all samples are active in the catalytic ozonation of oxalic acid, some of them allowing fastdegradation of the compound. The presence of lattice vacancies on the perovskites surface and tuning ofoxidation ability by the B cation play a key role in oxalic acid removal. Sample LaCoO3was considered thebest catalyst in oxalic acid degradation; in addition to its high activity, no metal leaching was observed.Regarding colour removal from the dye solution, single ozonation was slightly more efficient than cat-alytic ozonation in the presence of LaCoO3.On the other hand, ozonation catalyzed by LaCoO3improvedthe TOC removal, allowing almost complete mineralization of the solution after 3 h of reaction under theconditions tested.
