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Vol. 26 No. 13 (2014): Vol 26 Issue 13

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Hydrocracking of Used Cooking Oil into Biofuel Catalyzed by Nickel-Bentonite

https://doi.org/10.14233/ajchem.2014.15923
K. Wijaya
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Yogyakarta 55381, Indonesia
A. Syoufian
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Yogyakarta 55381, Indonesia
S.D. Ariantika
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Gadjah Mada University, Yogyakarta 55381, Indonesia

Corresponding Author(s) : K. Wijaya

karnawijaya@ugm.ac.id, karna_ugm@yahoo.com

Asian Journal of Chemistry, Vol. 26 No. 13 (2014): Vol 26 Issue 13

Abstract

Hydrocracking of used cooking oil catalyzed by Ni-bentonite has been conducted. Synthesis of Ni-bentonite was begun with the activation of bentonite by refluxing the bentonite using 6 M HCl followed by 1 % Ni metal impregnation derived from precursor NiCl2·6H2O. Ni-bentonite was analyzed by FT-IR, XRD and gas sorption analyzer. Its acidity value was analyzed by gravimetric sorption of pyridine base. Ni-bentonite catalyst was used for hydrocracking of used cooking oil by temperature variation of 300, 350, 400 and 450 °C. Hydrocracking products were analyzed by gas chromatography to be compared with the commercial gasoline, diesel oil and gas chromatography-mass spectrometer (GC-MS) to determine the content and composition of the biofuels. The experimental results showed that the activation of bentonite increased the acidity value of bentonite from 0.07838 mmol/g to 1.12 mmol/g. Ni-bentonite catalyst had the highest acidity of 1.19 mmol/g. Based on the analysis of the gas chromatography, hydrocracking products had components which synonymous with commercial gasoline and diesel oil. The optimum temperature of producing biofuel from used cooking oil with Ni-bentonite catalyst was 300 °C. Hydrocracking products contained 2-propanone, dodecanae, octanoic acid, decanoic acid, dodecanoic acid and 1,2-benzenedicarboxylic acid.

Keywords

Ni-bentonite Hydrocracking Used cooking oil Biofuel
Wijaya, K., Syoufian, A., & Ariantika, S. (2014). Hydrocracking of Used Cooking Oil into Biofuel Catalyzed by Nickel-Bentonite. Asian Journal of Chemistry, 26(13), 3785–3789. https://doi.org/10.14233/ajchem.2014.15923
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