Zuchra Helwani, Muliadi Ramli, Edy Saputra, Yogi Lesmana Putra, Desly Fadila Simbolon, Mohd Roslee Othman, Rinaldi Idroes
This research was designed to synthesize a composite catalyst of palm oil fly ash-impregnated calcium oxide prepared from eggshell waste. Several preparation conditions, such as temperature and time applied to calcination and dehydration processes, were investigated. As a result, the optimum temperature and the length of time of calcination were 900 °C and 3 h, respectively. Meanwhile, the dehydration process was performed optimally at 600 °C for 3 h. The X-ray diffraction (XRD) results indicate that the obtained catalyst mostly contained calcium oxide compounds (CaO and Ca(OH)2) and minor impurities of silica oxides (SiO2 and Ca2SiO4), with a catalyst-specific surface area of 30.24 m2/g. Regarding its catalytic performance, the composite catalyst proved successful for prospective application the in transesterification of palm oil off-grade, resulting in methyl palmitate and methyl oleate, which are two biodiesel compounds. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Department of Chemical Engineering, Universitas Riau, Pekanbaru, 28293, Indonesia; Department of Chemistry, Faculty of Mathematics and Natural Science, Universitas Syiah Kuala, Kopelma Darussalam, Banda Aceh, 23111, Indonesia; School of Chemical Engineering, University Sains Malaysia, Nibong Tebal, 14300, Penang, Malaysia
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