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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 Aerogel Kondensation Rasterelektronenmikroskop Röntgenbeugung Oberfläche |
| 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 hdl:20.500.11880/24239 http://dx.doi.org/10.22028/D291-24183 |
| Date of registration: | 7-Sep-2009 |
| Faculty: | SE - Sonstige Einrichtungen |
| Department: | SE - INM Leibniz-Institut für Neue Materialien |
| Collections: | INM SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Files for this record:
| File | Description | Size | Format | |
|---|---|---|---|---|
| AEG242.pdf | 2,64 MB | Adobe PDF | View/Open |
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