Publicação: MICROWAVE-ASSISTED HYDROTHERMAL SYNTHESIS OF Ni-DOPED SnO2 NANOPARTICLES AND THEIR USE AS CATALYSTS IN BIODIESEL PRODUCTION
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Data
2017-01-01
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Centro Federal Educacao Tecnologica Rio Grande Norte
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The high chemical stability and low cost of tin dioxide has been widely reported in the literature, as has its microwave-assisted hydrothermal synthesis. The use of heterogeneous catalysts in biodiesel synthesis has proved very promising, with conversion rates exceeding 80%. The purpose of this study was to synthesize Ni-doped SnO2 for application as a heterogeneous catalyst in the transesterification of vegetable oils. The powders were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy and N-2(g) adsorption/desorption using the Brunauer-Emmet-Teller (BET) method. The results revealed powders with nanometric agglomerates and high surface areas. Catalytic tests revealed an 80% retention factor and a decrease in the viscosity of babassu oil from 30.27 mm(2) s(-1) to 6.91 mm(2) s(-1), indicating that the synthesized catalyst can be used in the transesterification of vegetable oils.
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Francês
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Holos. Rio Grande Do Norte: Centro Federal Educacao Tecnologica Rio Grande Norte, v. 33, n. 5, p. 55-66, 2017.
