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Ag/AC adsorbent was prepared using impregnation method with activated carbon(AC)as carrier to investigate its desulfurization performance for benzothiophene(BT)in model diesel fuel.XRD was adopted to characterize prepared adsorbents.Surface acidic groups increased by HNO3 oxidation,which is conducive to the removal of weak alkaline BT.The adsorbent that AC modified with HNO3 as the carrier loaded AgCl has the highest sulfur adsorption capacity 0.472 mmol(S)/g.Finally,the adsorption behavior of AgNO3 on AC and mechanism of metallic silver on the adsorption removal of BT were discussed.