TY - JOUR
T1 - Fourier-transform infrared spectroscopy analysis of mechanochemical transformation kinetics of sodium carbonate to bicarbonate
AU - Đorđević, Nataša
AU - Vlahović, Milica
AU - Mihajlović, Slavica
AU - Martinović, Sanja
AU - Vušović, Nenad
AU - Lozanovic Sajic, Jasmina
PY - 2022
Y1 - 2022
N2 - During mechanical activation, qualitative changes that can produce various phenomena occur in the material. In this study, anhydrous sodium carbonate was mechanically activated for 2, 7, 14, and 28 minutes in a vibro mill at a frequency of 3000 oscillations per minute. After activation, four series of activated samples were stored in the air at room conditions for 31 days (relaxation period). To monitor the kinetics of the transformation process of activated sodium carbonate samples, i.e. the mechanism of sodium bicarbonate formation during relaxation, Fourier-transform infrared (FTIR) spectroscopy analysis was used. FTIR testing was performed as a function of relaxation time for all four series of samples, with characteristic groups observed: CO32-, HCO3- and OH-. The obtained results provided kinetics parameters for the transformation of sodium carbonate into sodium bicarbonate due to the chemisorption of moisture and carbon dioxide from the atmosphere.
AB - During mechanical activation, qualitative changes that can produce various phenomena occur in the material. In this study, anhydrous sodium carbonate was mechanically activated for 2, 7, 14, and 28 minutes in a vibro mill at a frequency of 3000 oscillations per minute. After activation, four series of activated samples were stored in the air at room conditions for 31 days (relaxation period). To monitor the kinetics of the transformation process of activated sodium carbonate samples, i.e. the mechanism of sodium bicarbonate formation during relaxation, Fourier-transform infrared (FTIR) spectroscopy analysis was used. FTIR testing was performed as a function of relaxation time for all four series of samples, with characteristic groups observed: CO32-, HCO3- and OH-. The obtained results provided kinetics parameters for the transformation of sodium carbonate into sodium bicarbonate due to the chemisorption of moisture and carbon dioxide from the atmosphere.
KW - FTIR
KW - Mechanical activation
KW - Mechanochemical transformation
KW - Sodium bicarbonate
KW - sodium carbonate
UR - http://www.scopus.com/inward/record.url?scp=85144579843&partnerID=8YFLogxK
U2 - 10.2298/SOS2204481D
DO - 10.2298/SOS2204481D
M3 - Article
SN - 0350-820X
VL - 54
SP - 481
EP - 494
JO - Science of Sintering
JF - Science of Sintering
IS - 4
ER -