دورية
Gamma-Alumina Synthesis from Ceramic Powders of Pseudoboehmite Obtained by the Sol-Gel Process
| العنوان: | Gamma-Alumina Synthesis from Ceramic Powders of Pseudoboehmite Obtained by the Sol-Gel Process |
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| المؤلفون: | Andrades, Raphael Cons, Munhoz Jr., Antônio Hortêncio, de Miranda, Leila Figueiredo |
| المصدر: | Materials Science Forum; November 2016, Vol. 881 Issue: 1 p12-17, 6p |
| مستخلص: | The aim of this work was to synthesize eight samples of pseudoboehmite obtained by the sol-gel process under different conditions in a two level factorial experimental design consisting of three variables. It was observed how the properties of pseudoboehmites (crystallinity and morphology) were affected by the three analyzed variables, namely: aging temperature, aging time and addition of polyvinyl alcohol. The samples were characterized by x-ray diffraction, scanning electron microscopy with secondary electrons detector, differential thermal analysis, and thermogravimetric analysis. After being characterized, the pseudoboehmite powders were calcined in an electric furnace at 500°C. After calcination, the resultant powders were analyzed via x-ray diffraction. One of the most important results achieved in this work was the successful synthesis of gamma-alumina from pseudoboehmite, as well as high crystallinity in the pseudoboehmite samples aged at high temperatures. |
| قاعدة البيانات: | Supplemental Index |
Full Text Finder | تدمد: | 02555476 16629752 |
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| DOI: | 10.4028/www.scientific.net/MSF.881.12 |