Journal
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
Volume 18, Issue 2, Pages 283-287Publisher
UNIV FED SAO CARLOS, DEPT ENGENHARIA MATERIALS
DOI: 10.1590/1516-1439.293014
Keywords
montmorillonite clay; acid treatement; esterification; oleic acid; biofuel
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Funding
- LCR-NUPPRAR (Catalysis and Refine Laboratory from Center of Primary Processing and Reuse of Produced Water and Waste) at Federal University of Rio Grande do Norte - UFRN
- CAPES-Brazil (Improving Coordination of Superior Academic Level People)
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Biodiesel is a fuel renewable, biodegradable and environmentally correct fuel, which can be obtained from the esterification reactions, transesterification and pyrolisis. Montmorillonite is a clay mineral of the smectite group and are of great interest for industrial processes such as catalysis and adsorption. Acid activation of clay minerals is one of the most effective methods proposed to produce active materials. In this work, montmorillonite clay was treated with H2SO4 in different concentrations (0.2 - 0.8 mol L-1), characterized by X-ray diffraction (XRD), infrared spectroscopy (FT-IR) and applied in the catalytic esterification of oleic acid. The results reveal that the clay treated with aqueous solutions 0.8 mol L-1 H2SO4 shows promising catalytic activity toward the studied reaction, with maximum conversion of oleic acid of 65% at 30 degrees C.
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