Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/182898
COMPARTIR / EXPORTAR:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

MCr2O4 (M=Co, Cu, and Zn) nanospinels for 2-propanol combustion: Correlation of structural properties with catalytic performance and stability

AutorHosseini, S. A.; Álvarez Galván, María Consuelo; García Fierro, José Luis CSIC ORCID; Niaei, Aligholi; Salari, D.
Palabras claveXPS
VOC
Catalysis
Nanooxide
D. Spinel
Fecha de publicacióndic-2013
EditorElsevier
CitaciónCeramics International 39(8): 9253-9261 (2013)
ResumenThe correlation between structure and activity of MCr2O4 nanospinels (M=Co, Cu, and Zn) synthesized by a sol–gel combustion method was investigated for the oxidation of 2-propanol. The catalysts were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), N2 adsorption/desorption, temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). Wide-angle XRD patterns show that the samples are pure spinel phases with cubic structure for CoCr2O4 and ZnCr2O4, and tetragonal structure for CuCr2O4. FTIR spectra confirmed the spinel structure of samples. The spinels were tested for total oxidation of 2-propanol as a model reaction for the catalytic combustion of oxygenated organic pollutants. ZnCr2O4 exhibited the highest activity and stability than the others toward the combustion of 2-propanol. The higher activity of ZnCr2O4 was ascribed to existence of excess surface oxygen on catalyst, active Cr3+–Cr6+ pair sites, and synergistic effect between ZnO and ZnCr2O4 confirmed by TPR and XPS techniques. The high stability of ZnCr2O4 and CuCr2O4 was explained by the existence of stable Cr6+ species on the surface of catalysts. The study showed that ZnCr2O4 could be used as a promising catalyst in the catalytic conversion of organic compounds.
Versión del editorhttps://doi.org/10.1016/j.ceramint.2013.05.033
URIhttp://hdl.handle.net/10261/182898
DOI10.1016/j.ceramint.2013.05.033
ISSN0272-8842
E-ISSN1873-3956
Aparece en las colecciones: (ICP) Artículos




Ficheros en este ítem:
Fichero Descripción Tamaño Formato
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

SCOPUSTM   
Citations

76
checked on 16-mar-2024

WEB OF SCIENCETM
Citations

69
checked on 24-feb-2024

Page view(s)

230
checked on 28-mar-2024

Download(s)

25
checked on 28-mar-2024

Google ScholarTM

Check

Altmetric

Altmetric


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.