Thermogravimetric Study of Porous Forsterite Synthesis by Hydromagnesite and Silica Gel Chlorination
| Autor: | Manuel W. Ojeda, Lucía Isabel Barbosa, J.A. González, Roberto Pablo Orosco |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Thermogravimetric analysis
Materials science CHLORINATION THERMOGRAVIMETRIC ANALYSIS 02 engineering and technology engineering.material 01 natural sciences law.invention chemistry.chemical_compound FORSTERITE law Specific surface area 0103 physical sciences polycyclic compounds Calcination Hydromagnesite 010302 applied physics X-RAY DIFFRACTION Silica gel Otras Ciencias Químicas technology industry and agriculture Ciencias Químicas Forsterite 021001 nanoscience & nanotechnology CHEMICAL SYNTHESIS Electronic Optical and Magnetic Materials Thermogravimetry chemistry Chemical engineering engineering 0210 nano-technology Mesoporous material CIENCIAS NATURALES Y EXACTAS |
| Popis: | A novel pyrometallurgical process for the synthesis of porous forsterite by calcination in chlorine of a mixture containing hydromagnesite and silica gel was developed. The aim of this work was to produce porous forsterite at low temperatures and short reaction times. Effects of temperature, reaction time and chlorine on the synthesis reaction were studied. Also, the reaction mechanism involved in the process was investigated. Isothermal and non-isothermal chlorination assays were carried out in a thermogravimetric equipment designed to work in corrosive atmospheres. Reagents and products were analyzed by thermogravimetry (TG) and X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2 adsorption–desorption isotherm (BET). The results showed that forsterite was obtained at 700 ∘C with a mesoporous structure and a specific surface area of 16.8 m2/g. Furthermore, it was observed that the presence of chlorine favored the decomposition of hydromagnesite. Fil: Orosco, Roberto Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina Fil: Ojeda, Manuel Wilfrido. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina Fil: Gonzalez, Jorge Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina Fil: Barbosa, Lucía Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina |
| Databáze: | OpenAIRE |
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