Application of KF/MgO as a heterogeneous catalyst in the production of biodiesel from rapeseed oil

Tao Wan; Ping Yu; Shangkun Gong; Qiang Li; Yunbai Luo

Korean Journal of Chemical Engineering, Vol.25, No.5, 998-1003, September, 2008

DOI10.1007/s11814-008-0161-8 Export Citation

Application of KF/MgO as a heterogeneous catalyst in the production of biodiesel from rapeseed oil

Tao Wan, Ping Yu, Shangkun Gong, Qiang Li, and Yunbai Luo^†

College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P.R., China

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Biodiesel was synthesized from rapeseed oil by transesterification over Magnesium oxide loaded with KF. The catalytic activity strongly depends on the loading amount of KF and calcined temperature. We found that the reaction reached a 79.37% yield when the loading amount was at 35 wt% and calcined at 500 oC. The simply dried 30% KF/MgO at 80 oC was found to give equally good results from the catalyst calcined at 500 oC, avoiding the usual activation at high temperature. The catalysts were characterized by the Hammett indicator method, BET, TG/DTG, XRD, NMR, EDS, and FT-IR. According to the instrumental analysis, the activity in the transesterification probably belonged to coordinately unsaturated F. and liberation of hydroxide during preparation. The effects of methanol/oil ratio and catalyst amounts on the conversion were also studied in this paper.

Keywords:Transesterification;Heterogeneous Catalyst;Loading of KF on MgO;Rapeseed Oil;Biodiesel

[References]

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[Referenced By]

[1] Graboski MS, McCormick RL, Prog. Energy Combust. Sci., 24(2), 125 (1998)

[2] Karmee SK, Chadha A, Bioresour. Technol., 96(13), 1425 (2005)

[3] Ma FR, Hanna MA, Bioresour. Technol., 70(1), 1 (1999)

[4] Bak YC, Choi JH, Kim SB, Kang DW, Korean J. Chem. Eng., 13(3), 242 (1996)

[5] Hou X, Qi Y, Qiao X, Wang G, Qin Z, Wang J, Korean J. Chem. Eng., 24(2), 311 (2007)

[6] Gryglewicz S, Bioresour. Technol., 70(3), 249 (1999)

[7] Watkins RS, Lee AF, Wilson K, Green Chem., 6, 335 (2004)

[8] Suppes GJ, Dasari MA, Doskocil EJ, Mankidy PJ, Goff MJ, Appl. Catal. A: Gen., 257(2), 213 (2004)

[9] Liu XJ, He HY, Wang YJ, Zhu SL, Catal. Commun., 8, 1107 (2007)

[10] Kim HJ, Kang BS, Kim MJ, Park YM, Kim DK, Lee JS, Lee KY, Catal. Today, 93-95, 315 (2004)

[11] Di Serio M, Cozzolino M, Tesser R, Patrono P, Pinzari F, Bonelli B, Santacesaria E, Appl. Catal. A: Gen., 320, 1 (2007)

[12] Ebiura T, Echizen T, Ishikawa A, Murai K, Baba T, Appl. Catal. A: Gen., 283(1-2), 111 (2005)

[13] Li X, Lu GZ, Guo YL, Guo Y, Wang YQ, Zhang ZG, Liu XH, Wang YS, Catal. Commun., 8, 1969 (2007)

[14] Bancquart S, Vanhove C, Pouilloux Y, Barrault J, Appl. Catal. A: Gen., 218(1-2), 1 (2001)

[15] Dossin TF, Reyniers MF, Marin GB, Appl. Catal. B: Environ., 62(1-2), 35 (2006)

[16] Xie WL, Peng H, Chen LG, Appl. Catal. A: Gen., 300(1), 67 (2006)

[17] Xie WL, Peng H, Chen LG, Appl. Catal. A: Gen., 300(1), 67 (2006)

[18] Xie WL, Li HT, J. Mol. Catal. A-Chem., 255(1-2), 1 (2006)

[19] Tanabe K, in: B. Imelik, C. Nacceche, G. Condurier, Y. B. Taarti and J. C. Vedrine, (Eds.), Catalysis by acids and bases, Elsevier, Amsterdam, p. 1 (1985)

[20] Clacens JM, Genuit D, Delmotte L, Garcia-Ruiz A, Bergeret G, Montiel R, Lopez J, Figueras F, J. Catal., 221(2), 483 (2004)

[21] Clark JM, Goodman EM, Smith DK, Brown SJ, Miller JM, J. Chem. Sco., Chem. Commun., 657 (1986)

[22] Xie WL, Huang XM, Catal. Lett., 107(1-2), 53 (2006)

[23] Akutu K, Kabashima H, Seki T, Hattori H, Appl. Catal. A: Gen., 247(1), 65 (2003)

[24] Weinstock LM, Stevenson JM, Tomellini SA, Pan SH, Reinhold DF, Tetrahedron Lett., 27, 3845 (1986)

[25] Ando T, Brown SJ, Clark JH, Cork DG, Hanafusa T, Ichihara J, Miller JM, Robertson MS, J. Chem. Soc.-Perkin Trans. 2, 1133 (1986)