4.2 Article

Acidic Functionalized Nanobohemite: An Active Catalyst for Methyl Ester Production

Journal

Publisher

WALTER DE GRUYTER GMBH
DOI: 10.1515/ijcre-2018-0283

Keywords

biodiesel; acidic catalyst; optimization; Response Surface Methodology (RSM); boehmite; nanocatalyst

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In the biodiesel production, acidic catalysts are ideally suitable for reacting with different oil sources at various free acid levels. On the other hand, the nanocatalysts can easily be propagated in the reaction medium and provide more accessible active sites for reaction. The aim of this work was to synthesize an acidic nanocatalyst based on boehmite nanoparticles then studying it to biodiesel production from soybean oil. Up to now, no reports were found on biodiesel production by this catalyst. After the synthesis and characterization of the catalyst, using response surface methodology (RSM), the optimized conditions for transesterification were 4.87 wt.% for catalyst dosage, 13:1 for the molar ratio of methanol to oil, 60 degrees C for reaction temperature, and 3 h for reaction time. At the optimal point, the production yield was 99.8 %. After six consecutive use of the catalyst, the yield dropped slightly (88 %). Consequently, the catalyst can be employed efficiently several runs in the production process.

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