Background:In recent years

adsorption of radioactive xenon by activated carbon has been increasingly applied to the treatment of off-gas in nuclear power project.Though pore structure of activated carbon has a great impact on its dynamic adsorption coefficients for xenon

the concerned research is rare.Purpose:It is very necessary to figure out the relationship between the pore structure and the dynamic adsorption coefficients for the purpose of the selection and development of activated carbon.Methods:In this study

the dynamic adsorption coefficients of xenon on four kinds of activated carbons were measured on a dynamic adsorption platform under the condition of 25℃

OMPa（gauge pressure）.And these four kinds of activated carbons were characterized by nitrogen adsorption and SEM.Results:The results show that the activated carbon of JH12-16 with the specific surface area of 991.9 m

2

·g

-1

has the largest xenon dynamic adsorption coefficient among these activated carbons.Conclusions:The dynamic adsorption coefficient of xenon on activated carbon doesn’t increase with the specific surface area or the pore volume. The mesopore and macropore only play the role of passageway for xenon adsorption.The most suitable pore for xenon adsorption is the pore with the pore size ranged from 0.55 to 0.6 nm.