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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/13176

Title: Transesterification of waste frying oil using a zinc aluminate catalyst
Other Titles: Fuel Processing Technology
Authors: Alves, C. T.
Oliveira, A.
Carneiro, S. A. V.
Silva, A. G.
Andrade, Heloysa Martins Carvalho
Melo, Silvio Alexandre Beisl Vieira de
Torres, Ednildo Andrade
Keywords: Biodiesel;Transesterification;Waste frying oil;Zinc aluminate
Issue Date: 2013
Publisher: Fuel Processing Technology
Abstract: The transesterification of waste frying oil (WFO) with methanol and ethanol was studied in a batch reactor using a zinc aluminate catalyst prepared by the combustion reaction method. The reaction runs were carried out for 2 hours, using alcohol:oil molar ratio of 40:1, temperature range of 60–200 °C, catalyst ratio of 1–10% wt., under 700 rpm stirring. The catalyst was characterized by XRD, EDX, TG, FTIR, N2 physisorption, NH3- and CO2-TPD. The catalyst showed a normal spinel structure and acid character (Lewis acid), in spite of the presence of both strong acid and base sites. Methyl and ethyl esters yields higher than 95% were obtained at 150 and 200 °C and the catalyst was recovered and reused in 3 reaction cycles, without significant loss of activity.
Description: Texto completo. Acesso restrito. p. 102–107
URI: http://www.repositorio.ufba.br/ri/handle/ri/13176
ISSN: 0378-3820
Appears in Collections:Artigos Publicados em Periódicos (PEI)

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