ABSTRACT An environmentally benign process was devel-oped for the transesterification of Jatropha curcas L. seed oil with methanol using artificial zeolites loaded with potassium acetate as a heterogeneous catalyst. After calcination for 5 h at 823 K, the catalyst loaded with 47 wt.% CH3COOK exhibited the highest efficiency and best catalytic activity. The easily prepared cata-lysts were characterized by means of X-ray dif-fraction and IR spectroscopy, as well as Hammett indicator titration. The results revealed a strong dependence of catalytic activity on ba-sicity. The optimum reaction conditions for transesterification of J. curcas oil were also in-vestigated. The methyl ester content in the bio-diesel product exceeded 91% after 4h reaction at reflux temperature in the presence of 2% solid catalyst and no water washing process is needed during workup.
Cite this paper
Xue, W. , Zhou, Y. , Song, B. , Shi, X. , Wang, J. , Yin, S. , Hu, D. , Jin, L. and Yang, S. (2009) Synthesis of biodiesel from Jatropha curcas L. seed oil using artificial zeolites loaded with CH3COOK as a heterogeneous catalyst. Natural Science, 1, 55-62. doi: 10.4236/ns.2009.11010.
 Ma, F. and Hanna, M. A. (1999) Biodiesel production: A review. Bioresour Technol, 70, 1-15.
Ramadhas, A. S., Jayaraj, S. and Muraleedharan C. (2005) Biodiesel production from high FFA rubber seed oil. Fuel, 84, 335-340.
Schuchardt, U., Sercheli, R. and Vargas, R. M. (1998) Transesterification of vegetable oils: A review. J Braz Chem Soc, 9, 199-210.
Graboski, M. S. and McCormick, R. L. (1998) Combus-tion of fat and vegetable oil derived fuels in diesel en-gines. Prog Energy Combust Sci, 24, 125-164.
Watkins, R. S., Lee, A. F. and Wilson, K. (2004) Li-CaO catalysed tri-glyceride transesterification for biodiesel applications. Green Chem, 6, 335-340.
Xie, W. L. and Li, H. T. (2006) Alumina-supported po-tassium iodide as a heterogeneous catalyst for biodiesel production from soybean oil. J Mol Catal A: Chem, 255, 1-9.
Gryglewicz, S. (1999) Rapeseed oil methyl esters prepa-ration using heterogeneous catalysts. Bioresour Technol, 70, 249-253.
Ono, Y. and Baba, T. (1997) Selective reactions over solid base catalysts. Catal Today, 38, 321-337.
Clark, J. H. and Macquarrie, D. J. (1996) Environmen-tally friendly catalytic methods. Chem Soc Rev, 25, 303-310.
Kim H J, Kang B S, Kim M J, Park Y M, Kim D K, Lee J S, Lee K Y. Transesterification of vegetable oil to bio-diesel using heterogeneous base catalyst. Catal Today 2004; 93-95: 315-320.
Xie, W. L., Peng, H. and Chen, L. G. (2006) Trans-esterification of soybean oil catalyzed by potassium loaded on alumina as a solid-base catalyst. Appl Catal A: Gen, 300, 67-74.
Bordawekar, S. V. and Davis, R. J. (2000) Probing the basic character of alkali-modified zeolites by CO2 ad-sorption microcalorimetry, butene isomerization, and toluene alkylation with ethylene. J Catal, 189, 79-90.
Suppes, G. J., Dasari, M. A., Doskocil, E. J., Mankidy, P. J. and Goff, M. J. (2004) Transesterification of soybean oil with zeolite and metal catalysts. Appl Catal A: Gen, 257, 213-223.
Doskocil, E. J. and Mankidy, P. J. (2003) Effects on solid basicity for sodium metal and metal oxide occluded NaX zeolites. Appl Catal A: Gen, 252, 119–132.
Leclercq, E., Finiels, A. and Moreau C. (2001) Trans-esterification of rapeseed oil in the presence of basic zeo-lites and related solid catalysts. J Am Oil Chem Soc, 78, 1161-1165.
Gubitz, G. M., Mittelbach, M. and Trabi, M. (1999) Ex-ploitation of the tropical oil seed plant Jatropha curcas L. Bioresour Technol, 67, 73-82.
Forni, L. (1974) Comparison of the methods for the de-termination of surface acidity of solid catalysts. Catal Rev, 8, 65-115.
Gorzawski, H. and Hoelderich, W. F. (1999) Preparation of superbases and their use as catalysts for double-bond isomerization. J Mol Catal A: Chem, 144, 181-187.
Xie, W. L., Huang, X. M. and Li, H. T. (2007) Soybean oil methyl esters preparation using NaX zeolites loaded with KOH as a heterogeneous catalyst. Bioresour Tech-nol, 98, 936-939.
Chen, Y. and Zhang, L. F. (1992) Surface interaction model of γ-alumina-supported metal oxides. Catal Lett, 12, 51-62.
Tanabe, K. (1985) Catalysis by acids and bases. in: B. Imelik, C. Nacceche, G. Condurier, Y. BenTaarti, J. C. Vedrine (Eds.), Elsevier, Amsterdam, 1-1.
Nakamoto, K. (1970) Infrared spectra of inorganic and coordination compounds. John Wiley, New York, 98-98.
Xie, W. L. and Huang, X. M. (2006) Synthesis of bio-diesel from soybean oil using heterogeneous KF/ZnO catalyst. Catal Lett, 107, 53-59.
Krupay, B. W. and Amenomiya, Y. (1981) Al-kali-promoted alumina catalysts: I. Chemisorption and oxygen exchange of carbon monoxide and carbon diox-ide on potassium-promoted alumina catalysts. J Catal, 67, 362-370.
Iordan, A., Kappenstein, C., Colnay, E. and Zaki, M. I. (1998) Surface contribution to the interfacial chemistry of potassium modified oxide catalysts. J Chem Soc Faraday Trans, 94, 1149-1156.
Amenomiya, Y. and Pleizier, G. (1982) Alkali-promoted alumina catalysts: II. Water-gas shift reaction. J Catal, 76, 345-353.
Stork, W. H. J. and Pott, G. T. (1974) Studies of com-pound formation on alkali/γ-aluminum oxide catalyst systems using chromium, iron, and manganese lumines-cence. J Phys Chem B, 78, 2496-2506.
Bilger, S., Syskakis, E., Naoumidis, A. and Nickel, H. (1992) Sol-gel synthesis of strontium-doped lanthanum manganite. J Am Ceram Soc, 75, 964-970.
Jiang, D. E., Zhao, B. Y., Xie, Y. C., Pan, G. C., Ran, G. P. and Min, E. Z. (2001) Structure and basicity of γ-Al2O3-supported MgO and its application to mercap-tan oxidation. Appl Catal A: Gen, 219, 69-78.
Meher, L. C., Sagar, D. V. and Naik, S. N. (2006) Tech-nical aspects of biodiesel production by transesterifica-tion-a review. Renew Sust Energy Rev, 10, 248-268.