Analysis of changes of mechanically activated sodium carbonate sample

Abstract

For mechanical activation of sodium carbonate, a vibro mill at a frequency of 3000 oscillations per minute was used for 28 minutes. After activation, samples were placed for 31 days in the air at room conditions. In aim to monitor the kinetics of the transformation process of sodium carbonate to bicarbonate, Fourier-transform infrared (FTIR) spectroscopy analysis was used. As a function of relaxation time characteristic groups were observed: CO3 2-, HCO3 - and OH-. The obtained results provided kinetics parameters for the transformation of carbonate into bicarbonate as a result of chemisorption of moisture and carbon dioxide from the atmosphere.