Journal
FUEL PROCESSING TECHNOLOGY
Volume 122, Issue -, Pages 176-181Publisher
ELSEVIER
DOI: 10.1016/j.fuproc.2014.01.028
Keywords
Transesterification; Mg-Al mixed oxide; Fixed-bed reactor
Funding
- Czech Science Foundation [P106/11/0773]
- UniCRE centre [CZ.1.05/2.1.00/03.0071]
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The performance of Mg-Al mixed oxides prepared from different types of precursors in transesterification of rapeseed oil was studied in a fixed-bed reactor. The structure and basicity of Mg-Al-K and Mg-Al-Na mixed oxides with 3.6 Mg/Al molar ratio were compared before and after the catalytic tests carried out at various reaction temperatures (115 and 140 degrees C) and residence times (0.7, 1.54 and 1.79 h). The maximum ester yield of 77% was obtained at 140 degrees C and residence time of 1.54 h. The ester yield was stable during 50 h of the experiment. It was associated with the negligible magnesium leaching from the solid catalyst into the liquid phases and the minimum change in the composition, structure and basicity of Mg-Al mixed oxides after the catalytic test. (C) 2014 Elsevier B.V. All rights reserved.
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