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• W2089969844 abstract "Abstract This study seeks to investigate zirconia modified with KOH as heterogeneous solid base catalyst for transesterification of new non-edible, Silybum marianum (oil content 46%, FFA 0.68% and linoleic acid 65.68%) oil using methanol to biodiesel. Having screened the catalytic performance of ZrO 2 loaded with different K-compounds, 32% KOH loaded on ZrO 2 was chosen. The catalyst was prepared using incipient wetness impregnation method. Following drying (after impregnation) and calcination at 530 °C for 5 h, the catalyst was characterized by means of Hammett indicators, XRD, FTIR, SEM, TGA and N 2 adsorption desorption measurements. It was found that the yield of the fatty acid methyl esters (FAME) was related to the catalyst base strength. The catalyst had granular and porous structures with high basicity and superior catalytic performance for the transesterification reaction. Maximum yield (90.8%) was obtained at 15:1 methanol to oil molar ratio, 6% catalyst amount, 60 °C reaction temperature in 2 h. The catalyst maintained sustained activity after five times of usage. The oxidative stability and iodine value were the only unsuitable properties of the biodiesel (out of range) but can easily be improved. The cetane number, flash point and the cold flow properties among others were however, comparable to international standards. The study indicated that KOH(32%)/ZrO 2 -5 is an economically, suitable catalyst for producing biodiesel from S. marianum oil which is a potential new non-edible feedstock that can contribute positively to biodiesel industry as its biodiesel can be rated as promising alternate fuel." @default.
• W2089969844 created "2016-06-24" @default.
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• W2089969844 date "2014-04-01" @default.
• W2089969844 modified "2023-10-18" @default.
• W2089969844 title "Application of zirconia modified with KOH as heterogeneous solid base catalyst to new non-edible oil for biodiesel" @default.
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• W2089969844 doi "https://doi.org/10.1016/j.enconman.2014.01.034" @default.
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