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Cs promoted triglyceride transesterification over MgO nanocatalysts

Montero, J. M., Wilson, Karen and Lee, Adam Fraser 2010. Cs promoted triglyceride transesterification over MgO nanocatalysts. Topics in Catalysis 53 (11-12) , pp. 737-745. 10.1007/s11244-010-9461-4

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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.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: Alkali metal-doping ; Basicity ; Biodiesel ; Catalysis ; Nanocrystalline MgO ; Transesterification.
Publisher: Springer
ISSN: 1022-5528
Last Modified: 19 Mar 2016 22:21

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