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Effect of Catalyst Preparation on the Performance of CaO-ZnO Catalysts for Transesterification

Authors: Pathravut Klinklom, Apanee Luengnaruemitchai, Samai Jai-In


In this research, CaO-ZnO catalysts (with various Ca:Zn atomic ratios of 1:5, 1:3, 1:1, and 3:1) prepared by incipientwetness impregnation (IWI) and co-precipitation (CP) methods were used as a catalyst in the transesterification of palm oil with methanol for biodiesel production. The catalysts were characterized by several techniques, including BET method, CO2-TPD, and Hemmett Indicator. The effects of precursor concentration, and calcination temperature on the catalytic performance were studied under reaction conditions of a 15:1 methanol to oil molar ratio, 6 wt% catalyst, reaction temperature of 60°C, and reaction time of 8 h. At Ca:Zn atomic ratio of 1:3 gave the highest FAME value owing to a basic properties and surface area of the prepared catalyst.

Keywords: CaO, ZnO, Biodiesel, Impregnation, Coprecipitation.

Digital Object Identifier (DOI):

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[1] Serio, M., Tesser, R., Pengmei, L., and Santacesaria, E. "Heterogeneous Catalysts for Biodiesel Production". Energy & Fuels 2008:22:207-217.
[2] Harrington KJ. "Chemical and physical properties of vegetable oil esters and their effect on diesel fuel performance". Biomass and energy 1986;9:1-17.
[3] USEPA. "A comprehensive analysis of biodiesel impacts on exhaust emissions". Draft Technical Report. USEPA; 2002.
[4] Fangrui, M. and Hanna,M.A. "Biodiesel production: a review". Bioresource Technology 1999:70(1):1-15.
[5] Knothe, G., Sharp, C.A., and Ryan, T.W. "Exhaust Emissions of Biodiesel, Petrodiesel, Neat Methyl Esters, and Alkanes in a New Technology Engine". Energy & Fuels 2006:20:403-408.
[6] Demirbas, A. "Biodiesel from vegetable oils via transesterification in supercritical methanol". Energy Conversion & Management 2002:43:2349-2356.
[7] Dizge, N., Aydiner, C., Imer, DY., Bayramoglu, M., Tanriseven, A., Keskinler, B. "Biodiesel production from sunflower, soybean, and waste cooking oils by transesterification using lipase immobilized onto a novel microporous polymer". Bioresource Technology 2009;100:1983-91.
[8] Liu, X., He, H., Wang, Y., Zhu, S., Piao, X. "Transesterification of soybean oil to biodiesel using CaO as a solid base catalyst". Fuel 2008;87:216-21.
[9] Shimada, Y., Watanabe, Y., Sugihara, A., Tominaga, Y. "Enzymatic alcoholysis for biodiesel fuel production and application of the reaction to oil processing". J Mol Catal B: Enzym 2002;17:133-42.
[10] Kulkarni, MG., Gopinath, R., Meher, LC., Dalai, AK. "Solid acid catalyzed biodiesel production by simultaneous esterification and transesterification." Green Chem 2006;8:1056-62.
[11] Qian, WW., Yang, L., Lu, XP. "Preparation of biodiesel catalyzed by KF/CaO with ultrasonic". In: Zhuang X, editor. International conference on biomass energy technologies. Guangzhou, China; 2008.
[12] Di Serio, M., Cozzolino, M., Tesser, R., Patrono, P., Pinzari, F., Bonelli, B., et al. "Vanadyl phosphate catalysts in biodiesel production". Appl Catal A 2007;320:1-7.
[13] Kawashima, A., Matsubara, K., Honda, K. "Acceleration of catalytic activity of calcium oxide for biodiesel production". Bioresour Technol 2009;100:696-700.
[14] Sing, K. S. W. "Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity". Pure and Applied Chemistry 1982: 54: 2201-18.
[15] Ngamcharussrivichai, C., Totarat, P., Bunyakiat, K. "Ca and Zn mixed oxide as a heterogeneous base catalyst for transesterification of palm kernel oil". Appl Catal A 2008;341:77-85.
[16] Gorzawski, H., Hoelderich, W.F. Appl. Catal. A: Gen. 179 (1999) 131- 137.
[17] Di serio, M., Ledda, M., Cozzolino, M., Minutillo, G., Tesser, R., Santacesaria, E. "Transesterification of soybean oil to biodiesel by using heterogeneous basic catalysts". Ind Eng Chem Res 2006:45:3009-14.
[18] Rubio, A.C.A., González, J.S., Robles, J.M.M., Tost, R.M., Alonso, D.M., López, A.J., Torres, P.M. "Heterogeneous transesterification processes by using CaO supported on zinc oxide as basic catalysts". Catalysis Today: 149: 281-287.