The preparation of Al2O3-Na2SO4 composites derived from local kaolin through an alkaline destruction combined with sulphatization method
| Autor: | E Maryani, N Sofiyaningsih, R Septawendar |
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| Rok vydání: | 2021 |
| Zdroj: | IOP Conference Series: Earth and Environmental Science. 882:012026 |
| ISSN: | 1755-1315 1755-1307 |
| DOI: | 10.1088/1755-1315/882/1/012026 |
| Popis: | Composites of Na2SO4 is promising for solid electrolyte application. In this initial study, composites of Al2O3/Na2SO4 were successfully synthesized from local kaolin through an alkaline destruction method combined with sulphatization. The composites were characterized including thermal behaviour, mineral phases, chemical composition, FT-IR spectra, and microstructures. The composites consist of a-Al2O3 and Na2SO4 phases after calcination at 1300 °C. This phenomenon is confirmed by the XRF and FT-IR result. The composite consists of Al2O3 and Na2SO4 as major components, accounting 41.98% and 47.09% of the total, respectively. Meanwhile, SiO2 is found as the impurity, accounting 2.86% of the total. The vibration modes of Al-O bonds are detected at 995.27 and 524.46 cm1, whereas the SO4 bands appear at 1111.00 and 617.22 cm1. Na2SO4 exhibits a rod-like particle that cover the alumina surface in the morphology. |
| Databáze: | OpenAIRE |
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