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VOL. 8, ISSUE 1 (2024)
Green CaO-based composite catalyst for biodiesel synthesis simultaneously: Effect of free fatty acids (FFAs) toward its stability
Authors
I N Simpen, I M Sutha Negara, Ayu Jyostisya Yotirani A W
Abstract
Solid catalyst has been known to be material that can increase the
reaction rate of biodiesel synthesis through esterification and/or
transesterification that has better stability than liquid catalyst. The
CaO-based solid catalyst is prepared from chicken eggshells impregnated with KOH
solution and loaded by TiO2/H to form CaO/K2O-TiO2/H
composite. This composite is used as solid catalyst for the conversion of used
cooking oil (UCO) into biodiesel in simultaneous
esterification-transesterification reaction. The composite catalyst is tested
for its stability by adding various concentrations of oleic acid in the UCO
(0.5 to 2.5%wt). The results showed that the catalyst stability were obtained
by adding 1.5% oleic acid. H-NMR and FT-IR analysis showed that the chemical
compounds of biodiesel were methyl esters, with a specific functional group of CH3-O
at chemical shift of 3.63 ppm and at wave number of 756.13 cm-1.
Herein, we can conclude that the catalyst stability for biodiesel synthesis is
influenced by the presence of FFAs.
Pages:19-22
How to cite this article:
I N Simpen, I M Sutha Negara, Ayu Jyostisya Yotirani A W "Green CaO-based composite catalyst for biodiesel synthesis simultaneously: Effect of free fatty acids (FFAs) toward its stability". International Journal of Chemistry Studies, Vol 8, Issue 1, 2024, Pages 19-22
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