Cs Promoted Triglyceride Transesterification Over MgO Nanocatalysts

Research output: Contribution to journalArticle

Published copy (DOI)

Author(s)

  • Janine M. Montero
  • Karen Wilson
  • Adam F. Lee

Department/unit(s)

Publication details

JournalTOPICS IN CATALYSIS
DatePublished - Jul 2010
Issue number11-12
Volume53
Number of pages9
Pages (from-to)737-745
Original languageEnglish

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.

    Research areas

  • Alkali metal-doping, Basicity, Biodiesel, Catalysis, Nanocrystalline MgO, Transesterification, SOLID BASE CATALYST, BIODIESEL SYNTHESIS, MAGNESIUM-OXIDE, SURFACE, OIL, CLUSTERS, METHANE

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