Yttrium-grafted mesostructured SBA-3 catalyst for the transesterification of glycerol with methyl acetate to synthesize fuel oxygenates

Authors: M.S. Khayoon, B.H. Hameed

Abstract:
The synthesis ofdi- andtriacetyl glycerol(DAG andTAG) via the transesterificationof glycerol withmethyl acetate was investigated over series of solid acid catalysts prepared by grafting yttrium, 1–3.5 wt.%, into the framework of SBA-3 support. The prepared catalysts were characterized for their intrinsic physicochemical and textural properties using BET surface area, surface acidity, XRD, SAXS, FT-IR, TEM, SEM and EDX. The catalyst 3%Y/SBA-3 exhibited superior catalytic performance achieving complete glycerol conversion with corresponding selectivity of 32% and 64% toward DAG and TAG. The best reaction conditions are: molar ratio of glycerol to methyl acetate of 1:12, reaction temperature of 110 ◦C and reaction time of 3 h. The effect of different operational parameters such as reaction temperature, the molar ratio of glycerol to methyl acetate, catalyst weight and reaction time on the transesterification reaction was investigated. The stability ofthe catalytic activity was examined via leaching and reusability tests through four consecutive batch runs.

Keywords:
SBA-3
Yttrium
Glycerol
Transesterification
Triacetin

Published in: Applied catalysis A: General  (Volumes 460–461, Pages 1-132, 10 June 2013)

Publisher: Elsevier

ISSN Information: 0926-860X

Yttrium-grafted mesostructured SBA-3 catalyst for the transesterification of glycerol with methyl acetate to synthesize fuel oxygenates

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