Synthesis of silicon carbide using concentrated solar energy
Por:
Ceballos-Mendivil L.G., Cabanillas-López R.E., Tánori-Córdova J.C., Murrieta-Yescas R., Pérez-Rábago C.A., Villafán-Vidales H.I., Arancibia-Bulnes C.A., Estrada C.A.
Publicada:
1 jun 2015
Resumen:
Silicon carbide (SiC) has been prepared successfully using concentrated solar energy provided by the IER-UNAM solar furnace. This has led to the development of a low CO2 emissions process for the production of this material via carbothermic reduction of a silica/carbon (SiO2/C) nanocomposite, which has shown a more reactive carbon for formation of composite, being more thermally stable. Silica (obtained by a sol-gel process) and sucrose were used as precursors of silicon and carbon, respectively, at a temperature of 700°C in controlled atmosphere (nitrogen) for the formation of the SiO2/C composite. This composite was used in a second step to obtain SiC at a temperature of 1500°C, in argon atmosphere. The experimental setup used a Pyrex® glass spherical vessel designed to work with concentrated solar power and controlled atmospheres. The structure and morphology of the solar obtained SiC were analyzed with FTIR, XRD, TGA/DSC, SEM and TEM techniques. Results show that it is feasible to use concentrated solar energy for the synthesis of SiC. The solar SiC obtained is nanostructured and is mainly ß-SiC. © 2015 Elsevier Ltd.
Filiaciones:
Ceballos-Mendivil L.G.:
Facultad de Ingeniería Mochis, Universidad Autónoma de Sinaloa, Prol. A. Flores y Fuente de Poseidón s/n, Los Mochis, Sinaloa, 81223, Mexico
Cabanillas-López R.E.:
Depto. de Ingeniería Química y Metalurgia, Universidad de Sonora, Blvd. Encinas y Rosales s/n, Hermosillo, Sonora, 83000, Mexico
Tánori-Córdova J.C.:
Univ Sonora, Dept Invest Polimeros & Mat, Hermosillo 83000, Sonora, Mexico
Depto. de Investigación en Polímeros y Materiales, Universidad de Sonora, Blvd. Encinas y Rosales s/n, Hermosillo, Sonora, 83000, Mexico
Murrieta-Yescas R.:
Univ Sonora, Dept Invest Polimeros & Mat, Hermosillo 83000, Sonora, Mexico
Depto. de Investigación en Polímeros y Materiales, Universidad de Sonora, Blvd. Encinas y Rosales s/n, Hermosillo, Sonora, 83000, Mexico
Pérez-Rábago C.A.:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Temixco 62580, Morelos, Mexico
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco s/n, Col. Centro, Temixco, Morelos, 62580, Mexico
Villafán-Vidales H.I.:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Temixco 62580, Morelos, Mexico
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco s/n, Col. Centro, Temixco, Morelos, 62580, Mexico
Arancibia-Bulnes C.A.:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Temixco 62580, Morelos, Mexico
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco s/n, Col. Centro, Temixco, Morelos, 62580, Mexico
Estrada C.A.:
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Temixco 62580, Morelos, Mexico
Instituto de Energías Renovables, Universidad Nacional Autónoma de México, Priv. Xochicalco s/n, Col. Centro, Temixco, Morelos, 62580, Mexico
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