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BIBTEX RIS

CHARACTERIZATION AND CATALYTIC ACTIVITY OF K 2 CO 3 /Al 2 O 3 IN THE TRANSESTERIFICATION OF SUNFLOWER OIL IN CONVENTIONAL AND MICROWAVE HEATING

2014; Brazilian Chemical Society; Linguagem: Inglês

10.5935/0100-4042.20140300

ISSN

1678-7064

Autores

Paola E. Gama, Elizabeth R. Lachter, Rosane A. S. San Gil, Aline V. Coelho, Isadora A. Sidi, Rodrigo L. Poubel, Arnaldo C. Faro, Andréa Luzia F. de Souza,

Tópico(s)

Catalysis and Oxidation Reactions

Resumo

CONVENTIONAL AND MICROWAVE HEATING.Commercial and synthetic mesoporous aluminas impregnated with potassium carbonate were characterized by X-ray diffraction (XRD), nitrogen physisorption, infrared spectroscopy and 27 Al MAS NMR.The activities in the transesterification reaction of sunflower oil with methanol for biodiesel production were evaluated. 27Al MAS NMR spectra evidenced the presence of Al IV and Al VI in the samples, and also of Al V sites in the mesoporous synthesized alumina, which disappeared after impregnation with potassium salt followed by calcination.All aluminas containing potassium were active for biodiesel production from sunflower seed oil, with high conversions by both conventional heating and microwave irradiation.

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