 Esterification and transesterification over SrO–ZnO/Al2O3 as a novel bifunctional catalyst for biodiesel productionAli Al-Saadi, Bobby Mathan and Yinghe He Renewable Energy, 2020, vol. 158, issue C, 388-399 Abstract: A series of novel bifunctional catalysts (SrO–ZnO/Al2O3) have been synthesised via the wet impregnation method for biodiesel production. The basic and acidic activities of the prepared catalysts were investigated using corn oil and oleic acid, respectively. Physio-chemical characteristics of the synthesised catalysts were analysed by XRD, SEM-EDS, TGA-DSC, and FT-IR. 1H NMR was used for analysing the fatty acid ethyl ester and the free fatty acid. The catalyst exhibited higher catalytic activity in transesterification reaction, with 95.1% reaction conversion at operating conditions of 10:1 ethanol to corn oil molar ratio, 10 wt% catalyst loading, and 180 min at 70 °C. However, the conversion for esterification reaction was 71.4% at operating conditions 5:1 ethanol to corn oil molar ratio, 10 wt% catalyst loading, 6 h reaction time at 70 °C reaction temperature. The kinetic studies revealed that the transesterification and esterification reactions have good agreement with the first-order model. Keywords: Heterogeneous catalyst; Acid-base catalyst; SrO–ZnO/Al2O3; Reaction kinetics; Corn oil; Oleic acid (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:158:y:2020:i:c:p:388-399 DOI: 10.1016/j.renene.2020.05.171 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
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