Biodiesel production by the transesterification of cottonseed oil by solid acid catalysts

doi:10.1007/s11705-007-0003-y

Front. Chem. Sci. Eng.

2007, Vol. 1

Issue (1) : 11-15 https://doi.org/10.1007/s11705-007-0003-y

Biodiesel production by the transesterification of cottonseed oil by solid acid catalysts

CHEN He, PENG Baoxiang, WANG Dezheng, WANG Jinfu

Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;

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Abstract Methyl esters (biodiesel) were produced by the transesterification of cottonseed oil with methanol in the presence of solid acids as heterogeneous catalysts. The solid acids were prepared by mounting H₂SO₄ on TiO₂ · nH₂O and Zr(OH)₄, respectively, followed by calcining at 823K. TiO₂-SO₄^2- and ZrO_2-SO₄^2- showed high activity for the transesterification. The yield of methyl esters was over 90% under the conditions of 230°C, methanol/oil mole ratio of 12:1, reaction time 8 h and catalyst amount (catalyst/oil) of 2% (w). The solid acid catalysts showed more better adaptability than solid base catalysts when the oil has high acidity. IR spectral analysis of absorbed pyridine on the samples showed that there were Lewis and BrØnsted acid sites on the catalysts.

Issue Date: 05 March 2007

Cite this article:

PENG Baoxiang,CHEN He,WANG Jinfu, et al. Biodiesel production by the transesterification of cottonseed oil by solid acid catalysts[J]. Front. Chem. Sci. Eng., 2007, 1(1): 11-15.

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https://academic.hep.com.cn/fcse/EN/10.1007/s11705-007-0003-y
https://academic.hep.com.cn/fcse/EN/Y2007/V1/I1/11

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