Phase transition in niobium pentoxide supported on silica-alumina

dc.creatorBraga, Valdeilson Souza
dc.creatorGarcia, Fillipe Augusto da Costa
dc.creatorDias, José Alves
dc.creatorDias, Sílvia Cláudia Loureiro
dc.creatorBraga, Valdeilson Souza
dc.creatorGarcia, Fillipe Augusto da Costa
dc.creatorDias, José Alves
dc.creatorDias, Sílvia Cláudia Loureiro
dc.date.accessioned2012-01-25T17:50:31Z
dc.date.accessioned2022-10-07T15:07:44Z
dc.date.available2012-01-25T17:50:31Z
dc.date.available2022-10-07T15:07:44Z
dc.date.created2012-01-25T17:50:31Z
dc.date.issued2008
dc.identifier1572-8943
dc.identifierhttp://www.repositorio.ufba.br/ri/handle/ri/5252
dc.identifierv. 92
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/4004279
dc.description.abstractNb2O5 supported on SiO2–Al2O3 were prepared with a wide loading range (2, 5, 10, 15, 20 and 25 mass%) and analyzed by simultaneous thermogravimetric (TG) and differential thermal analysis (DTA). The materials presented a phase transition close to 1364°C. This phase transition was studied by XRD, FTIR and Raman spectroscopy. Amixture of orthorhombic (T) andmonoclinic (H and M) crystalline phases was evidenced in the supported samples, which is coverage dependent, in contrast to the formation of only the monoclinic phase (H and M) when pure Nb2O5 is heated under the same conditions. These results indicate the stabilization of Nb2O5 on silica-alumina surface.
dc.languageen
dc.subjectniobium pentoxide
dc.subjectphase transition
dc.subjectsilica-alumina
dc.subjectsupported catalyst
dc.subjectthermal analysis
dc.titlePhase transition in niobium pentoxide supported on silica-alumina
dc.typeArtigo de Periódico


Este ítem pertenece a la siguiente institución