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Artículo

A green and reusable catalytic system based on silicopolyoxotungstovanadates incorporated in a polymeric material for the selective oxidation of sulfides to sulfones

Frenzel, Romina AlejandraIcon ; Palermo, ValeriaIcon ; Sathicq, Angel GabrielIcon ; Elsharif, Asma M.; Luque, Rafael; Pizzio, Luis ReneIcon ; Romanelli, Gustavo PabloIcon
Fecha de publicación: 01/2021
Editorial: Elsevier Science
Revista: Microporous and Mesoporous Materials
ISSN: 1387-1811
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ingeniería de Procesos Químicos; Química Orgánica

Resumen

Two vanadium-containing Keggin silicopolyoxotungsto compounds K5SiVW11O40 and K6SiV2W10O40 were synthesized and characterized. They were incorporated in a superporous hydrogel constitute by prop-2-enamide and propenoic acid as initial monomers and bis-acrylamide as cross-linking moiety. Materials were characterized by several techniques. According to FTIR and 51V MAS-NMR, the (SiVxW12-xO40)(4+x)- anions are the main species present in the hybrid materials. Additionally, they do not decompose during the preparation of the composite. XRD and SEM-EDX results suggest that (SiVxW12-xO40)(4+x)- anions were well dispersed in the support or present as amorphous phases. These materials were evaluated as catalysts in the oxidation of sulfides to sulfones, using an eco-friendly oxidant and mild reaction conditions. The hybrid materials with higher content of the heteropoly compound displayed a remarkable catalytic behaviour in the oxidation of diphenyl sulfide. Materials also exhibited a stable catalytic performance through consecutive reuses. Optimum reaction parameters established were subsequently translated to the oxidation of a sulfide of interest (dapsone) due to its pharmacological activities.
Palabras clave: DAPSONE , KEGGIN SILICOPOLYOXOTUNGSTO COMPOUNDS , SULFIDE OXIDATION , SUPERABSORBENT HYDROGEL
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/164875
DOI: http://dx.doi.org/10.1016/j.micromeso.2020.110584
Colecciones
Articulos(CINDECA)
Articulos de CENTRO DE INV EN CS.APLICADAS "DR.JORGE J.RONCO"
Citación
Frenzel, Romina Alejandra; Palermo, Valeria; Sathicq, Angel Gabriel; Elsharif, Asma M.; Luque, Rafael; et al.; A green and reusable catalytic system based on silicopolyoxotungstovanadates incorporated in a polymeric material for the selective oxidation of sulfides to sulfones; Elsevier Science; Microporous and Mesoporous Materials; 310; 1-2021; 1-12
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