Produção Nacional
Revisado por pares
Residue-Based CaO Heterogeneous Catalysts from Crab and Mollusk Shells for FAME Production Via Transesterification
2019; Brazilian Chemical Society; Linguagem: Inglês
10.21577/0103-5053.20190240
ISSN1678-4790
AutoresClaudia Cristina Cardoso, Alexsandro Cavalcanti, Ricardo Silva, Severino Alves, Fabiana de Sousa, Vânya Márcia Duarte Pasa, Santiago Arias, José Geraldo A. Pacheco,
Tópico(s)Biodiesel Production and Applications
ResumoThe production of fatty acid methyl esther (FAME) via transesterification was studied, assessing the influence of CaO heterogeneous catalysts obtained from four different fishery residues: sururu, crab, clam and mussel.Characterization and properties of the residues were obtained via thermogravimetric analysis, X-ray diffraction, X-ray fluorescence, Fourier transform infrared (FTIR) spectra, nitrogen adsorption/desorption, chemical composition and scanning electron microscopy (SEM).Catalytic activities and reaction kinetics of FAME synthesis from the transesterification of soybean oil were performed.FAME yield was determined by 1 H nuclear magnetic resonance (NMR).A higher efficiency and reaction rate were observed for the catalysts obtained from the sururu residues with 93.7% FAME yield after 3.5 h of reaction at the first usage, reducing only to 91.0% after four consecutive cycles of reuse.The best activities were assigned to the presence of SrO, to smaller particle size, higher pore volumes and the higher Ca leaching, yielding Ca-diglyceroxide which is an important active phase for transesterification.
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