Reforming of Glycerol into Bio-Crude: A Parametric Study
-
Matthew Tymchyshyn
,
Zhongshun Yuan
Abstract
The reforming of glycerol was investigated using a micro-reactor in the presence of MoCoP/zeolite catalyst. The parameters which were investigated include initial hydrogen pressure, reaction temperature, residence time, and feedstock concentration. The liquid products were separated into water-soluble components and bio-oil by liquid-liquid extraction with water and ethyl acetate. The bio-oil, gaseous products, char, and unreacted glycerol were quantified relative to the initial mass of glycerol feed. The composition of the bio-oil was determined by GC/MS. The optimum conditions for the reforming of glycerol into bio-crude in the presence of MoCoP/zeolite catalyst were found to be: 300°C reaction temperature, 5 MPa initial hydrogen pressure, 60 min reaction time, and 100% glycerol feed. While dilution of the glycerol feedstock with water had a negative effect on bio-oil yield, reforming of pure glycerol produced the highest bio-oil yield (40 wt.% at 300°C, 1 h, and 5 MPa H2). The amount of char deposited on the catalyst decreased with extended reaction time, increased reaction temperature, and elevated initial hydrogen pressure.
Acknowledgements
The authors are grateful for the financial support from the Natural Science and Engineering Research Council of Canada (NSERC) through the Discovery Grant, and from the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA) through the New Directions Program Grant. The authors acknowledge Mr. Kailash Bhatia of the Department of Mechanical Engineering and Mr. Garry Rathje of the Department of Chemical Engineering, both of Lakehead University, Thunder Bay, Ontario, Canada, where this research was conducted, for their assistance in constructing and maintaining the experimental equipment.
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