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Shape Selectivity Effects in Etherification of Glycerol to Diglycerol Isomers in a Solvent-Free Reaction System by Li–Mg/SBA-15 Catalyst

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Abstract

Performance and shape selective effect in the etherification reaction of glycerol to diglycerol by Li–Mg/SBA-15 catalyst was investigated. The reaction was carried out at 240 °C with 2 wt% of catalyst for up to 18 h. The catalyst characteristics were elucidated through surface, SEM and TEM analyses. 10Li10Mg/SBA-15 catalyst showed the highest glycerol conversion and diglycerol selectivity of 77 and 82 %, respectively with corresponding diglycerol yield of 63 %. The distribution of diglycerol isomers was successfully elucidated. αβ-diglycerol isomer was predominantly formed in contrast to αα isomer in homogeneously catalyzed reaction.

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Acknowledgments

A Research University Grant (814144) to support this work is acknowledged.

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Authors and Affiliations

  1. School of Chemical Engineering, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia

    Afrizal Admiral & Ahmad Zuhairi Abdullah

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  1. Afrizal Admiral
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  2. Ahmad Zuhairi Abdullah
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Correspondence to Ahmad Zuhairi Abdullah.

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Admiral, A., Abdullah, A.Z. Shape Selectivity Effects in Etherification of Glycerol to Diglycerol Isomers in a Solvent-Free Reaction System by Li–Mg/SBA-15 Catalyst. Catal Lett 144, 211–215 (2014). https://doi.org/10.1007/s10562-013-1159-3

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  • DOI: https://doi.org/10.1007/s10562-013-1159-3

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