http://www.cnr.it/ontology/cnr/individuo/prodotto/ID52224

XAS characterization and CO oxidation on delta-allumina supported La, Mn, Co and Fe oxides (Articolo in rivista)

Type

Label

XAS characterization and CO oxidation on delta-allumina supported La, Mn, Co and Fe oxides (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

Ida Pettiti (1); Stefano Colonna (2); Sergio De Rossi (1); Marco Faticanti (1); Giuliano Minelli (1); Piero Porta (1) (2004)
XAS characterization and CO oxidation on delta-allumina supported La, Mn, Co and Fe oxides
in PCCP. Physical chemistry chemical physics (Print); Royal Society of Chemistry, Cambridge (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Ida Pettiti (1); Stefano Colonna (2); Sergio De Rossi (1); Marco Faticanti (1); Giuliano Minelli (1); Piero Porta (1) (literal)

Pagina inizio

Pagina fine

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

Rivista

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1) CNR-IMIP, MICE c/o Dip. di Chimica, Univ. La Sapienza, Roma 2) CNR-ISM, Tor Vergata, Roma (literal)

Titolo

XAS characterization and CO oxidation on delta-allumina supported La, Mn, Co and Fe oxides (literal)

Abstract

delta-Al2O3 supported La, Mn, Co and Fe containing catalysts were prepared by impregnation of delta-Al2O3 with citrate-type precursors and calcination at 1073 K. The catalysts were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (DRS), X-ray absorption spectroscopy (XAS), and BET specific surface area determination. XRD revealed the presence of delta-Al2O3 in all cases and, at 30 wt.% of metal loading, of other single (alpha-Mn2O3 and alpha-Fe2O3) or mixed (LaAlO3, LaMnO3, CoAl2O4 and LaFeO3) oxide phases. XAS suggested the formation of some oxide phases also at lower loading. In particular, all Mn and 10 wt.% La-Mn containing samples revealed the formation of alpha-Mn2O3, while the 30 wt.% La-Mn bimetallic sample showed the formation of LaMnO3 perovskite. All Co containing samples revealed the presence of CoAl2O4 spinel. Fe containing samples showed the formation of alpha-Fe2O3, while La-Fe containing ones, that of LaFeO3 perovskite. (literal)

Editore