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Promotional Effects of CeO2 on Stability and Activity of CaO for the Glycerolysis of Triglycerides

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Abstract

Glycerolysis of triglycerides (corn oil) was carried out over CeO2 promoted CaO catalysts. CeO2 was introduced into CaO via the sol–gel combustion method with citrate as the precipitator. A strong interaction between CaO and CeO2 was revealed by XRD, XPS and Raman results, which results in an increased basic strength and amounts of strong basic sites. Moreover, the lixiviation of CaO in the glycerol at high temperature, which is the key problem in the glycerolysis reaction over CaO-based catalysts, was inhibited significantly. XRD, N2 adsorption–desorption isotherms and SEM results exhibit introducing CeO2 increases the surface area, pore volume and pore size of CaO catalysts, which are beneficial to the catalytic activity. The 2CaO–1CeO2 catalyst with strong basicity and large surface area achieved over 90 % conversion after 1 h while the lixiviated Ca decreased dramatically.

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Acknowledgments

This work was supported by Science and Technology Commission of Shanghai Municipality (14DZ227390). The authors also acknowledge the financial support of Consortium de Recherche en Biotechnologie Industrielle du Québec (CRIBIQ), the Natural Sciences and Engineering Research Council of Canada (NSERC) and MITACS.

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Authors and Affiliations

  1. Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Laboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200433, People’s Republic of China

    Feng Qin, Wei Shen & Hualong Xu

  2. Department of Chemical Engineering, Laval University, Quebec, QC, G0A 1V6, Canada

    Feng Qin, Bendaoud Nohair & Serge Kaliaguine

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  1. Feng Qin
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  2. Bendaoud Nohair
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  3. Wei Shen
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Correspondence to Hualong Xu or Serge Kaliaguine.

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Qin, F., Nohair, B., Shen, W. et al. Promotional Effects of CeO2 on Stability and Activity of CaO for the Glycerolysis of Triglycerides. Catal Lett 146, 1273–1282 (2016). https://doi.org/10.1007/s10562-016-1741-6

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  • DOI: https://doi.org/10.1007/s10562-016-1741-6

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