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Eva Marlina Ginting
Department of Physics, Faculty of Mathematics and Natural Sciences ,University State of Medan, Jl. Williem Iskandar Psr V, Medan 20221
Chemical Engineering, Chemistry & Bioengineering Chemistry

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Synthesis and Characterization of Alumina Precursors Derived from Aluminum Metal through Electrochemical Method Eva Marlina Ginting; Nurdin Bukit
Indonesian Journal of Chemistry Vol 15, No 2 (2015)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (478.763 KB) | DOI: 10.22146/ijc.21205

Abstract

This study investigated the use of the electrochemical method to prepare alumina (a-Al2O3) from aluminum metal. The a-Al2O3 precursor was calcined at 110 °C for six hours and then characterized using Fourier Transform Infrared (FTIR) spectroscopy, Particle Size Analysis (PSA), X-Ray Diffraction spectroscopy (XRD), and Scanning Electron Microscopy (SEM). To study transformation of the precursor into α-Al2O3, three samples were sintered at 400, 800, and 1200 °C, respectively and they were characterized. The most interesting result obtained was the transition of AlOOH and β-Al(OH)3 into γ-Al2O3 at low temperatures (400 to 800°C), followed by transformation of γ-Al2O3 into a-Al2O3 at high temperature (1200 °C). The overall results obtained demonstrated that electrochemical method is a potential alternative for production of α-Al2O3, which can be achieved in practically pure phase at sintering temperature at 1200 °C.
Co-Authors Nurdin Bukit