Abstract: Activated coke samples with different content of bentonite,i.e.,0,10%,20%,30% and 40%,was prepared to study the effect of bentonite binder on denitrification performance of activated coke.The effects of different mass fraction bentonite on iodine value,ash content,loading density,abrasion resistance,compressive strength,pore structure and denitrification efficiency were investigated by conventional index analysis,N2 adsorption-desorption method and denitrification evaluation in a fixed bed.The results show that bentonite can replace part of high temperature coal tar as binder for preparing active coke.When the addition amount is less than 20%,the iodine value,loading density,pore development degree and denitrification efficiency of active coke are improved. Meanwhile,the ash content and compressive strength of active coke are significantly affected by bentonite binder.Specifically,the ash content increases from 7.76% to 30. 75% and the compressive strength decreases from 682 N to 114 N with the addition amount of bentonite increasing from 0 to 40%.The performance of active coke with 20% bentonite is best,and the iodine value,loading density,ash content,compressive strength,abrasion resistance,specific surface and denitrification efficiency are 406 mg/g,616 g/L,19.33%,375 N,95.4%,329.70 m2/g and 73.2%,respectively.