Rate Theoretical Research on CO2 Absorption and Emission Behaviors of Li4SiO4 as CO2 Absorbent Ceramics by Thermogravimetry

Abstract

Li4SiO4 with various particle sizes were synthesized at various temperatures by solid state method. Reaction rate constant was estimated by measurement on CO2 absorption by thermogravimetry. A tendency was found that the reaction rate of the samples with small particle size is larger than that of the samples with larger particle size in the case of same measurement temperature. It was found by Arrhenius plot that the reaction rate drastically increased when measurement temperature was over melting temperature of Li2CO3 in samples.