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Cs Promoted Triglyceride Transesterification Over MgO Nanocatalysts

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Abstract

The influence of Cs on the structure and basicity of nanocrystalline MgO was assessed via electron microscopy, CO2 chemisorption, XRD and XPS. Caesium incorporation via co-precipitation under supercritical conditions generates Cs2Mg(CO3)2 nanocrystallites with an enhanced density and strength of surface base sites. Wet impregnation proved less effective for modifying MgO nanocrystals. A strong synergy between Cs and Mg components in the co-precipitated material dramatically enhanced the rate of tributyrin transesterification with methanol relative to undoped MgO and homogeneous Cs2CO3 catalysts. On-stream deactivation of Cs-doped MgO reflects heavy surface carbon deposition and loss of the high activity Cs2Mg(CO3)2 phase due to limited Cs dissolution.

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Acknowledgments

This work was supported by the Engineering and Physical Sciences Research Council [EP/E013090/1, EP/F063423]. JMM thanks BP Biofuels and the EPSRC for the award of a studentship. AFL thanks the EPSRC for the award of a Leadership Fellowship [EP/G007594/1].

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Authors and Affiliations

  1. Department of Chemistry, University of York, York, YO10 5DD, UK

    Janine M. Montero

  2. School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK

    Karen Wilson & Adam F. Lee

Authors
  1. Janine M. Montero
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  2. Karen Wilson
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  3. Adam F. Lee
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Correspondence to Karen Wilson or Adam F. Lee.

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Montero, J.M., Wilson, K. & Lee, A.F. Cs Promoted Triglyceride Transesterification Over MgO Nanocatalysts. Top Catal 53, 737–745 (2010). https://doi.org/10.1007/s11244-010-9461-4

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  • DOI: https://doi.org/10.1007/s11244-010-9461-4

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