Identifying the active phase in Cs-promoted MgO nanocatalysts for triglyceride transesterification

Julia J. Woodford, Christopher M.A. Parlett, Jean Philippe Dacquin, Gianantonio Cibin, Andrew Dent, Janine Montero, Karen Wilson, Adam F. Lee

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Background: Biodiesel is a clean-burning, renewable and biodegradable diesel fuel substitute derived from animal fats and plant oils, which may play an important role in replacing diminishing fossil fuel reserves and combating climate change. Conventional biodiesel production uses soluble base catalysts, such as Na or K alkoxides, to convert oils into fuel, and as a result requires energy intensive aqueous quench cycles to isolate the biodiesel product. Results: Cs-doping nanoparticulate MgO, prepared via a novel, supercritical sol-gel method, yields a solid base catalyst with improved activity for the transesterification of pure triacylglycerides (TAGs) and olive oil. Conclusion: Here, X-ray absorption spectroscopy (XAS) is used to probe the local chemical environment of Cs atoms in order to identify the nature of the catalytically active species as Cs2Mg(CO3)2(H2O)4.

    Original languageEnglish
    Pages (from-to)73-80
    Number of pages8
    JournalJournal of Chemical Technology and Biotechnology
    Volume89
    Issue number1
    DOIs
    Publication statusPublished - 1 Jan 2014

    Keywords

    • Biodiesel
    • Cs
    • MgO
    • Solid base
    • XAS

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