TY - JOUR
T1 - Synthesis of silicon carbide using concentrated solar energy
AU - Ceballos-Mendivil, L. G.
AU - Cabanillas-López, R. E.
AU - Tánori-Córdova, J. C.
AU - Murrieta-Yescas, R.
AU - Pérez-Rábago, C. A.
AU - Villafán-Vidales, H. I.
AU - Arancibia-Bulnes, C. A.
AU - Estrada, C. A.
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - 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 β-SiC.
AB - 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 β-SiC.
KW - Concentrated solar energy
KW - SiO<inf>2</inf>/C composite
KW - Silicon carbide
KW - Solar SiC
KW - Solar furnace
UR - http://www.scopus.com/inward/record.url?scp=84929484030&partnerID=8YFLogxK
U2 - 10.1016/j.solener.2015.04.006
DO - 10.1016/j.solener.2015.04.006
M3 - Artículo
AN - SCOPUS:84929484030
SN - 0038-092X
VL - 116
SP - 238
EP - 246
JO - Solar Energy
JF - Solar Energy
ER -