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http://cimav.repositorioinstitucional.mx/jspui/handle/1004/95| Synthesis and characterization of sodium silicate obtained by different chemical routes | |
| ARMANDO TEJEDA OCHOA | |
| ALEJANDRO HERRERA RAMIREZ | |
| Acceso Abierto | |
| Atribución | |
| Silicon is the second most abundant element in Earth’s crust (28% compared to oxygen at 46%)
occurring as silicon dioxide (sand, flint, quartz) and various silicates.
Sodium silicate is the generic name given to a series of compounds derived from soluble sodium
silicate glass. Aqueous solutions are important in biology, geology and numerous technical
processes including for example the manufacturing of sol gels and zeolites. Sodium silicate is also
used as an activator for geopolymer cements synthesis, which are a low carbon emission type.
When silicates are combined with cement ingredients, they react chemically in order to form
masses with strong binding properties.
In this study different silica sands have been investigated in order to synthesize sodium silicate,
which has several applications in the industry. All the silica sand banks were compared with a
control sample, then different reactions were studied and performed in order to obtain the best
sodium silicate. All reactions were evaluated and their products characterized, which comprised
structural and microstructural analysis including, but not limited to, thermogravimetric analysis,
scanning electron microscopy, energy dispersive spectrometry, Fourier transform infrared
spectroscopy (FTIR), Raman spectroscopy, X-ray fluorescence (XRF) and X-ray powder
diffraction (XRD). The best reaction is presented and discussed. El silicio es el segundo elemento más abundante en la corteza terrestre (28% comparado con el oxígeno 46%) y se presenta como dióxido de silicio (arena, piedra, cuarzo) y varios silicatos. Silicato de sodio es el nombre genérico dado a una serie de compuestos derivados del silicato de sodio soluble. Soluciones acuosas de silicato son importantes en biología, geología y un número de procesos químicos incluyendo por ejemplo la manufactura de sol geles y zeolitas. El silicato de sodio es también usado como activador para la síntesis de cementos geopoliméricos, los cuales son reconocidos por presentar una baja huella de carbono. Cuando los silicatos son combinados con ingredientes del cemento, reaccionan químicamente para formar masas con fuertes propiedades ligantes. | |
| 2015-11 | |
| Tesis de maestría | |
| Inglés | |
| QUÍMICA | |
| Aparece en las colecciones: | Maestría en Ciencia de Materiales |
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| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| Tesis Armando Tejeda Ochoa.pdf | 5.08 MB | Adobe PDF | Visualizar/Abrir |