Artículo
Synthesis and characterization of a novel tungstosilicic acid immobilized on zeolites catalyst for the photodegradation of methyl orange
Leal Marchena, Candelaria
; Lerici, Laura Carolina
; Renzini, Maria Soledad
; Pizzio, Luis Rene
; Pierella, Liliana Beatriz
Fecha de publicación:
07/2016
Editorial:
Elsevier Science
Revista:
Applied Catalysis B: Environmental
ISSN:
0926-3373
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Materials based on tungstosilicic acid (TSA) immobilized on zeolites (NH4Y and NH4ZSM5) were prepared by wet impregnation of the zeolite matrix with TSA aqueous solutions. The concentration was varied in order to obtain TSA contents of 5%, 10%, 20%, and 30% w/w in the solid. Catalysts were further characterized by N2 adsorption–desorption isotherms, FT-IR, XRD, DRS-UV–vis and SEM techniques. The resulting materials were evaluated in the photodecomposition of azo dye methyl orange. The results revealed that the materials present suitable properties to be used as catalysts in the photocatalytic treatment of wastewater containing dyes, and the photodegradation follows a pseudo-first-order kinetics. Reaction parameters such as TSA content, catalysts mass, reuses and pH, were evaluated.
Palabras clave:
Photocatalysis
,
Zeolites
,
Tungstosilicic Acid
,
Azoic Dye
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Colecciones
Articulos(CINDECA)
Articulos de CENTRO DE INV EN CS.APLICADAS "DR.JORGE J.RONCO"
Articulos de CENTRO DE INV EN CS.APLICADAS "DR.JORGE J.RONCO"
Articulos(CITEQ)
Articulos de CENTRO DE INVESTIGACION Y TECNOLOGIA QUIMICA
Articulos de CENTRO DE INVESTIGACION Y TECNOLOGIA QUIMICA
Citación
Pierella, Liliana Beatriz; Pizzio, Luis Rene; Renzini, Maria Soledad; Lerici, Laura Carolina; Leal Marchena, Candelaria; Synthesis and characterization of a novel tungstosilicic acid immobilized on zeolites catalyst for the photodegradation of methyl orange; Elsevier Science; Applied Catalysis B: Environmental; 188; 7-2016; 23-30
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