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Titolo:
Red-ox properties and phase composition of CeO2-ZrO2 and Y2O3-CeO2ZrO2 solid solutions
Autore:
Markaryan, GL; Ikryannikova, LN; Muravieva, GP; Turakulova, AO; Kostyuk, BG; Lunina, EV; Lunin, VV; Zhilinskaya, E; Aboukais, A;
Indirizzi:
Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia Moscow MVLomonosov State Univ Moscow Russia 119899 oscow 119899, Russia Univ Littoral, MREID, Lab Catalyse & Environm, F-59140 Dunkerque, France Univ Littoral Dunkerque France F-59140 vironm, F-59140 Dunkerque, France
Titolo Testata:
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
fascicolo: 3, volume: 151, anno: 1999,
pagine: 435 - 447
SICI:
0927-7757(19990701)151:3<435:RPAPCO>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXYGEN STORAGE CAPACITY; CERIUM OXIDE; CATALYSTS; BEHAVIOR; CEO2; SURFACE;
Keywords:
CrO2-ZrO2; CO oxidation; crystalline structure; O-2(-) formation and reactivity; red-ox behaviour; solid solutions; TPR; Y2O3-CeO2-ZrO2;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Lunina, EV MoscowRussiamonosov State Univ, Dept Chem, Vorobiovy Hills, Moscow 119899, Moscow MV Lomonosov State Univ Vorobiovy Hills Moscow Russia 119899
Citazione:
G.L. Markaryan et al., "Red-ox properties and phase composition of CeO2-ZrO2 and Y2O3-CeO2ZrO2 solid solutions", COLL SURF A, 151(3), 1999, pp. 435-447

Abstract

The crystalline structure and red-ox behaviour of CeO2-ZrO2 and Y2O3-CeO2-ZrO2 solid solutions were studied by means of XRD, TPR and EPR techniques. It has been found that Y2O3 doping stabilizes a cubic structure at a low content of both Y2O3 (10.0 mol%) and CeO2 (7.0 mol%) and favours the reduction of the sample. The formation of O-2(-) anion radicals on the surface of CeO2-ZrO2 and Y2O3-CeO2-ZrO2 in comparison with pure CeO2 was studied. A higher activity of O-2(-) in the reoxidation of the samples and towards CO wasobserved for yttria doped CeO2-ZrO2. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 21:24:12