标题：Adsorption performance of semi-coke modified by KMnO4solution for gas-phase Hg0in flue gas
作者：Wang, Li ;Chen, Ji-Tao ;Zhang, Hua-Wei ;Li, Min ;Zhang, Lin-Lin ;Liu, Shan-Shan
作者机构：[Wang, Li ;Chen, Ji-Tao ;Zhang, Hua-Wei ;Li, Min ;Zhang, Lin-Lin ;Liu, Shan-Shan ] College of Chemical and Environmental Engineering, Shandong Univers 更多
来源：Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology
摘要：In an attempt to develop a novel and more effective sorbent with low-cost for the removal of gas-phase Hg0from flue gas, the adsorption performance of semi-coke and KMnO4solution-modified semi-coke for gas-phase Hg0was investigated with a bench-scale fixed-bed reactor system. The experimental results suggest that the adsorption performance of semi-coke is good at low temperature but weak at higher temperature. The semi-cokes impregnated by KMnO4solution have excellent adsorption performance for gas-phase Hg0at 140 °C, and can be further enhanced by heating the impregnated samples at 250 °C. The BET analysis shows that the semi-coke has rich micro-pores but become poor after modification. The XPS results indicates that the adsorbed mercury on the surface of the modified semi-coke samples mainly exists in oxidation state (Hg2+) and these compounds (KMnO4, K2MnO4and MnO2) play a key role in the oxidation reaction of gas-phase Hg0.