In order to investigate the effect of different chemical forms of sodium salt on the CO2 adsorption capacity and gasification of Zhundong coal

sodium salts were loaded to acid-washed coal by solution impregnation method. The gasification and the CO2 adsorption capacity of sodium salt loaded coal samples and acid-washed coal sample were studied by thermogravimetric analyzer (TGA)

and the gasification reaction kinetics model were analyzed and calculated for coal samples. The results suggested that the initial gasification temperature and the activity energy of gasification reaction were reduced significantly

while the gasification index and the CO2 adsorption capacity were enhanced dramatically when sodium salt was loaded. The catalytic activity of four sodium salts for the CO2 gasification reaction of Zhundong coal was in the following order:Na2CO3 > NaHCO3 > Na2SO4 > NaCl. The strong chemisorption ability of coal samples can reflect the CO2 gasification reactivity. The gasification process of acid-washed coal could be well described by random pore model (RPM)

while the sodium salt loaded coal gasification reaction process could be well explained by modified random pore model (MRPM).