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Gas phase glycerol dehydration to acrolein using supported silicotungstic acid catalyst

Talebian-Kiakalaieh, A. and Amin, N. A. S. (2017) Gas phase glycerol dehydration to acrolein using supported silicotungstic acid catalyst. Malaysian Journal of Analytical Sciences, 21 (4). pp. 849-859. ISSN 1394-2506

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Abstract

The gas phase dehydration of glycerol to acrolein over a series of supported silicotungstic acid (HSiW) on γ-Al2O3 nanoparticle (W10-Al, W20-Al, W30-Al and W40-Al) has been investigated. The catalysts were characterized by temperature programmed desorption, nitrogen adsorption–desorption, thermogravimetric analysis, X-ray diffraction, field-emission scanning electron microscopy and energy dispersive X-ray techniques. The large pore diameters (>21 nm) of the prepared catalysts alleviated the coke deposition effect. The acidity of the samples increased from 2 to 2.6 mmol/g.cat by varying HSiW loadings from 10 to 40 wt.% on γ-Al2O3 nanoparticle. The highest acrolein yield achieved was 74.1% at 94% glycerol conversion over W20-Al catalyst for 10 wt% glycerol feed concentration and 300 ˚C reaction temperature in 3 hours. The combined physicochemical characteristics of W20-Al made it more superior compared with other samples in the current study.

Item Type:Article
Uncontrolled Keywords:Dehydration, Glycerol
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:76805
Deposited By: Fazli Masari
Deposited On:30 Apr 2018 22:07
Last Modified:30 Apr 2018 22:07

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