Abstract
Single stage alkali-catalyzed transesterification of vegetable oils having free fatty acid(FFA) content above 0.5% promotes saponification which lowers the biodiesel yield bydeactivating the catalyst. A strong solid base KF/Eggshell catalyst, which is capable ofcircumventing saponification while producing biodiesel in a single stage from neem oilhaving FFA content of 4.2% was synthesized. The catalyst was synthesized by a thermaltreatment of chicken eggshell at 900oC, followed by a wet impregnation of potassiumfluoride (KF). The catalyst synthesis process factors such as; eggshell calcination time,potassiumfluoride(KF)dosage,catalystcalcinationtemperatureandtimewereoptimizedusingaresponsesurfacemethodology(RSM).Theoptimalsynthesisconditionswerefoundtobe2heggshellcalcinationtime,KFdosageof29wt.%,catalystcalcination temperature of 600oC for 2 h. The KF/Eggshell catalyst was characterized.BETanalysisrevealedthat,thecatalystismesoporouswithaporewidthof 3.24nm,porevolume of 0.045 cm3/g and specific surface area of 128 m2/g.
Frontiers, E. (2023). Synthesis and Application of Potassium Fluoride/Eggshell - Iron (II, III) Oxide Catalyst for Single Stage Transesterification of Neem Oil. Afribary. Retrieved from https://afribary.com/works/synthesis-and-application-of-potassium-fluoride-eggshell-iron-ii-iii-oxide-catalyst-for-single-stage-transesterification-of-neem-oil
Frontiers, Edu "Synthesis and Application of Potassium Fluoride/Eggshell - Iron (II, III) Oxide Catalyst for Single Stage Transesterification of Neem Oil" Afribary. Afribary, 20 Feb. 2023, https://afribary.com/works/synthesis-and-application-of-potassium-fluoride-eggshell-iron-ii-iii-oxide-catalyst-for-single-stage-transesterification-of-neem-oil. Accessed 21 May. 2024.
Frontiers, Edu . "Synthesis and Application of Potassium Fluoride/Eggshell - Iron (II, III) Oxide Catalyst for Single Stage Transesterification of Neem Oil". Afribary, Afribary, 20 Feb. 2023. Web. 21 May. 2024. < https://afribary.com/works/synthesis-and-application-of-potassium-fluoride-eggshell-iron-ii-iii-oxide-catalyst-for-single-stage-transesterification-of-neem-oil >.
Frontiers, Edu . "Synthesis and Application of Potassium Fluoride/Eggshell - Iron (II, III) Oxide Catalyst for Single Stage Transesterification of Neem Oil" Afribary (2023). Accessed May 21, 2024. https://afribary.com/works/synthesis-and-application-of-potassium-fluoride-eggshell-iron-ii-iii-oxide-catalyst-for-single-stage-transesterification-of-neem-oil