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Your search keyword '"Cicala, Gianluca"' showing total 13 results
Start Over Author "Cicala, Gianluca" Journal macromolecular symposia
13 results on '"Cicala, Gianluca"'

12. Kinetic Study of the Thermal Dehydration of SiO2 and SiO2‐ZrO2 Composites Prepared by Sol–Gel Route.

Author

Blanco, Ignazio, Catauro, Michelina, Cicala, Gianluca, Dal Poggetto, Giovanni, and Tosto, Claudio

Subjects
DEHYDRATION, THERMOGRAVIMETRY, SOL-gel processes
Abstract

SiO2, ZrO2, and SiO2‐ZrO2 composites at different percentages of zirconia are synthesized by the sol–gel method and thermally characterized by thermogravimetric analysis (TGA) to investigate the kinetics of the dehydration process. The synthesized samples are subjected to TGA and the obtained data are treated by the Kissinger method to calculate the apparent activation energy (Ea) of dehydration. The obtained kinetic parameters are discussed and compared each other and with those obtained for the pristine silica. [ABSTRACT FROM AUTHOR]

Published
2022
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13. Kinetic Study of the Thermal Dehydration of Fly Ash Filled Geopolymers.

Author

Blanco, Ignazio, Cicala, Gianluca, Tosto, Claudio, Recca, Giuseppe, Poggetto, Giovanni Dal, and Catauro, Michelina

Subjects
*FLY ash, *KAOLIN, *DEHYDRATION, *THERMOGRAVIMETRY, *ACTIVATION energy, *LANDFILLS, *DEHYDRATION reactions, *CRYSTALLIZATION kinetics
Abstract

Metakaolin‐based geopolymers at different percentage of fly ash (namely 25, 50, and 70% wt) are prepared by using recycled fly ash, aiming at reducing the amount of waste to be treated or disposed in landfills. The synthesized samples are subjected to the thermogravimetric analysis (TGA) to investigate the kinetics of dehydration process. To this purpose, TGA data are treated by the Kissinger method to calculate the apparent activation energy (Ea) of dehydration. The obtained kinetics parameters are discussed and compared with each other and with those obtained for the control geopolymer. A decrease in Ea values of the filled geopolymers is found, showing the effect of the fly ash in reducing the dehydration rate. A classification among the samples at different percentage of fly ash is also drawn up, showing the reaching of a plateau at percentage above the 50 wt%. [ABSTRACT FROM AUTHOR]

Published
2021
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