Please use this identifier to cite or link to this item: doi:10.22028/D291-24183
Title: Caracterização estrutural de aerogéis de nióbio para fins catalíticos
Other Titles: Structural characterization of niobia aerogels for catalytic purposes
Author(s): Rabêlo, A. A.
Bozano, Dorotéia F.
Florentino, Ariovaldo O.
Aegerter, Michel A.
Language: (Other)
Year of Publication: 1994
OPUS Source: Anais / 38° Congresso Brasileiro de Cerâmica; 2° Encontro de Mineradores e Consumidores : [18 a 21 de junho de 1994, Blumenau, SC] / Associação Brasileira de Cerâmica. - Vol. 3. - São Paulo, SP : Associação Brasileira de Cerâmica, 1994, S. 1008-1013
SWD key words: Niob
DDC notations: 500 Science
Publikation type: Conference Paper
Abstract: -
Niobia (Nb2O5) gels have been prepared by hidrolysis and condensation of niobium pentabutoxide. The respective aerogels have been obtained by subsequently drying by supercritical extraction with carbon dioxide. The textural and structural properties of these aerogels, heat-treated at different temperatures, are characterized by surface area measurements, X-ray diffraction and SEM analysis. These results are compared to those obtained with commercial niobia (Nb2O5∙xH2O - CBMM-AD638). The synthetic route to produce aerogels was found to stabilize the surface area and structural properties. Aerogels with area four times as high than commercial Nb2O5 have been obtained at 773 K.
Link to this record: urn:nbn:de:bsz:291-scidok-23735
Date of registration: 7-Sep-2009
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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