Transesterification of Jatropha oil to biodiesel using SrO catalysts modified with CaO from waste eggshell

Addition of SrO in combination with a hydration technique were used to modify eggshell-derived CaO catalysts for transesterification of Jatropha oil with methanol. A Box-Behnken design of experiment was employed to determine the optimal conditions. The results showed that the maximum methyl ester co...

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Bibliographic Details
Published in:Catalysis communications 2021-01, Vol.149, p.106233, Article 106233
Main Authors: Palitsakun, Supaphorn, Koonkuer, Kitsirirat, Topool, Boossayamas, Seubsai, Anusorn, Sudsakorn, Kandis
Format: Article
Language:English
Subjects:
CaO
Eggshell
Hydration
Jatropha
SrO
Transesterification
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Summary:Addition of SrO in combination with a hydration technique were used to modify eggshell-derived CaO catalysts for transesterification of Jatropha oil with methanol. A Box-Behnken design of experiment was employed to determine the optimal conditions. The results showed that the maximum methyl ester content of 99.71% could be achieved with the catalyst having 7 mmol/g of SrO at 65 °C, 89.8 min, MeOH:oil molar ratio of 27.6:1, and catalyst amount of 4.77 wt%. At these conditions, the catalyst remained active with methyl ester content of ca. 90% for several cycles and gradually deactivated due to the losses of active metals. [Display omitted] •Hydration technique increases activity of Eggshell-derived CaO catalyst.•SrO addition can further increase catalyst basicity and transesterification activity.•Box-Behnken design of experiments was used to optimize percentage of ME content.•The 7-SrO/CaO-H shows the highest activity yielding methyl ester content of 99.71%.•The catalyst maintains its high activity about 90% for several cycles of reuse.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2020.106233