On the impact of the preparation method on the surface basicity of Mg-Zr mixed oxide catalysts for tributyrin transesterification

Rabee, A, Manayil, J, Isaacs, M, Parlett, C, Durndell, L, Zaki, M, Lee, A and Wilson, K 2018, 'On the impact of the preparation method on the surface basicity of Mg-Zr mixed oxide catalysts for tributyrin transesterification', Catalysts, vol. 8, no. 6, pp. 1-14.


Document type: Journal Article
Collection: Journal Articles

Title On the impact of the preparation method on the surface basicity of Mg-Zr mixed oxide catalysts for tributyrin transesterification
Author(s) Rabee, A
Manayil, J
Isaacs, M
Parlett, C
Durndell, L
Zaki, M
Lee, A
Wilson, K
Year 2018
Journal name Catalysts
Volume number 8
Issue number 6
Start page 1
End page 14
Total pages 14
Publisher MDPIAG
Abstract Mixed metal oxides are promising heterogeneous catalysts for biofuel production from lipids via alcoholysis, however, the impact of solid acidity and/or basicity on reactivity is comparatively poorly understood. Two systematically related families of MgO-ZrO2mixed oxide catalysts were therefore prepared by different synthetic routes to elucidate the impact of surface acid-base properties on catalytic performance in the transesterification of tributyrin with methanol. The resulting materials were characterized by TGA-MS, ICP-OES, N2porosimetry, XRD, TEM, XPS, DRIFTS, and CO2-temperature-programmed desorption (TPD). MgO-ZrO2catalysts prepared by both non-aqueous impregnation and citric acid-mediated sol-gel routes exhibit excellent activity and stability. The citrate routes favor highly dispersed MgO and concomitant Lewis acid-base pair formation at the interface with zirconia. However, for both the citrate and impregnation routes, tributyrin transesterification occurs over a common, strongly basic MgO active site.
Subject Catalysis and Mechanisms of Reactions
Keyword(s) Biodiesel
MgO
Mixed oxide
Solid base
Transesterification
DOI - identifier 10.3390/catal8060228
Copyright notice © 2018 by the authors. Licensee MDPI, Basel, Switzerland. Creative Commons Attribution (CC BY) license
ISSN 2073-4344
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