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


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 CsMg(CO)(HO).
Original languageEnglish
Pages (from-to)73-80
Number of pages8
JournalJournal of Chemical Technology and Biotechnology
Issue number1
Early online date15 May 2013
Publication statusPublished - 31 Jan 2014

Bibliographical note

Funding: EPSRC (EP/F063423/2; EP/G007594/2; a Leadership Fellowship and studentship support); and the Royal Society for an Industry Fellowship; and the award of beamtime at Diamond Light Source (allocation 4193).

Supporting information may be found in the publisher online version of this article.


  • biodiesel
  • XAS
  • MgO
  • Cs
  • solid base


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