INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Biomorphic synthesis of cobalt oxide and ceria microfibers. Their application in diesel soot oxidation
Autor/es:
MIRÓ, EDUARDO ERNESTO; MILT, VIVIANA GUADALUPE; STEGMAYER, MARÍA ÁNGELES
Revista:
CATALYSIS COMMUNICATIONS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2020 vol. 139
ISSN:
1566-7367
Resumen:
CeO2, Co3O4 and mixed Co3O4-CeO2 hollow microfibers were synthesized using cotton as biotemplate by incipientwetness impregnation (one step synthesis). Mixed Co3O4-CeO2 fibers were also prepared by incorporatingcobalt onto CeO2 fibers by wet impregnation (sequential synthesis). A thorough characterization by BET, XRD,LRS, XPS, EDX and SEM was conducted to correlate the physical chemistry properties of the fibers with theircatalytic performance. Ceria fibers showed a maximum combustion rate at TM = 420 °C. While cobalt fiberswere even more active (TM = 365 °C), Co3O4-CeO2 fibers resulted in intermediate activity (TM = 380 °C). Thegood catalytic performance could be related to chemisorbed labile oxygen species (Oβ).
