SYNTHESIS OF NEW CaO-MgO CATALYST FROM EGGSHELLS: EXPLORING THE INFLUENCE OF CATALYST SIZE VARIATIONS ON BIODIESEL FORMATION YIELD
DOI:
https://doi.org/10.15421/jchemtech.v32i4.307739Keywords:
Heterogeneous catalyst; eggshells; CaO; MgO; transesterification; waste cooking oil; biodiesel.Abstract
This scientific research delves into the viability of synthesizing a novel heterogeneous catalyst, leveraging the synergistic combination of eggshell-derived calcium monoxide (CaO) and magnesium oxide (MgO). The study meticulously characterizes variously synthesized catalyst samples employing an array of sophisticated analytical techniques including X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) analysis. Through these analyses, the intricate relationship between size variations and the resultant properties of the catalysts is thoroughly elucidated, providing invaluable insights into their structural and morphological features. Subsequent to characterization, the catalysts are rigorously evaluated in the transesterification reaction of waste cooking oil to biodiesel. This pivotal phase of the investigation aims to discern the catalyst that exhibits the highest biodiesel yield. FTIR analysis identified 1100 °C as the optimal temperature for converting eggshell-derived CaCO3 to CaO. XRD confirmed the formation of CaO and the desired CaO-MgO catalyst. SEM showed that catalyst morphology varies with size, while BET analysis indicated that surface area is influenced by these size changes. Biodiesel yield was found to be sensitive to catalyst size variations.
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