Transesterification of palm oil using KF and NaNO3 catalysts supported onspherical millimetric γ-Al2O3

Aminul Islam, and Taufiq-Yap, Yun Hui and Pogaku, Ravindra and Chan, Eng Seng and Chu, Chi Ming (2013) Transesterification of palm oil using KF and NaNO3 catalysts supported onspherical millimetric γ-Al2O3. Renewable Energy, 59. pp. 23-29. ISSN 0960-1481


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The use of spherical millimetric gamma-alumina (γ-Al2O3) as a catalyst support for the production of biodiesel from palm oil is demonstrated. The catalyst support was produced using a dripping method, and KF and NaNO3 catalysts were loaded on the support using the impregnation method. X-ray diffraction (XRD) analysis showed the formation of Na2O and NaAlO2 phases on the NaNO3/γ-Al2O3 catalyst and the formation of K2O and KAlF4 on the KF/γ-Al2O3 catalyst, which were possibly the active sites for the transesterification reaction. The highest number and strength of basic sites generated from the solid phase reaction of the KF/γ-Al2O3 catalyst loaded with 0.24g kF/g γ-Al2O3 and the NaNO3/γ-Al2O3 catalyst loaded with 0.30g NaNO3/g γ-Al2O3 were confirmed by temperature programmed desorption of CO2 (CO2-TPD) analysis. The nitrogen adsorption-desorption isotherms also revealed a mesoporous structure of the catalysts. The biodiesel yield was comparable to that produced from smaller catalysts, and this result indicated the potential of the macrospherical catalysts

Item Type: Article
Uncontrolled Keywords: gamma-alumina, transesterification, biodiesel, heterogenous catalyst,potassium fluoride, sodium nitrate
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: SCHOOL > School of Engineering and Information Technology
Date Deposited: 19 Aug 2013 03:18
Last Modified: 11 Oct 2017 04:58

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