Tungsten based catalysts for oxidative desulfurization: surface species and partially reduced systems as key features to improve the activity



Título del documento: Tungsten based catalysts for oxidative desulfurization: surface species and partially reduced systems as key features to improve the activity
Revista: Journal of applied research and technology
Base de datos: PERIÓDICA
Número de sistema: 000427617
ISSN: 1665-6423
Autores: 1
1
Instituciones: 1Universidad Nacional Autónoma de México, Facultad de Química, Ciudad de México. México
Año:
Periodo: Dic
Volumen: 16
Número: 6
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés Tungsten oxide based catalysts for the oxidative desulfurization (ODS) process of dibenzothiophene compounds using H2O2 as oxidizing agent were studied. Catalysts were characterized by TPR-H2, SEM-EDS, XRD, N2-physisorption and Raman spectroscopy. Different surface tungsten oxide species were detected and related to the ODS activity, furthermore, the predominance of the surface tungsten oxide species was associated with the tungsten loading. Moreover, in some catalysts, WO3 crystals were detected and their role in the performance of the catalysts was studied too. Finally, the catalysts were partially reduced and tested in the ODS reaction, the reduced catalysts exhibited high activity and an improvement of H2O2 to sulfones yield
Disciplinas: Ingeniería,
Química
Palabras clave: Ingeniería química,
Desulfuración oxidativa,
Catalizadores,
Oxido de tungsteno,
Diesel,
Dibenzotiofeno
Keyword: Chemical engineering,
Oxidative desulfurization,
Catalysts,
Tungsten oxide,
Diesel,
Dibenzothiophene
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