Abstract For efficient conversion of elemental mercury (Hg0) in flue gas, we coupled the non-thermal plasma (NTP) and catalytic oxidation, and prepared MnCu/Ti catalytic through dielectric barrier discharge (DBD) reactor. The experimental system of DBD coupling MnCu/Ti catalytic oxidation was established. The catalytic oxidation performance and the influences of energy density (SED), oxygen content, H2O content, and the concentrations of NO and SO2 on the conversion efficiency of Hg0 were clarified. Based on the experimental results and DFT simulation results, the mechanism of the catalytic oxidation was elucidated. Our results showed that after coupling with MnCu/Ti, the conversion efficiency of Hg0 in DBD reactor under mild conditions increased from 42.9% to 86.7%, and the energy consumption decreased from 0.77 mg Hg0/kWh to 1.56 mg Hg0/kWh. The proposed method has the advantages of high efficiency, intensive and no secondary pollution, hence it has good application potential in Hg0 conversion and removal from flue gas.

中文翻译：

---

电介质阻挡放电耦合催化氧化有效转化烟气中的 Hg0

摘要 为了有效转化烟气中的元素汞（Hg0），我们将非热等离子体（NTP）和催化氧化相结合，通过介质阻挡放电（DBD）反应器制备了MnCu/Ti催化剂。建立了DBD偶联MnCu/Ti催化氧化实验体系。阐明了催化氧化性能以及能量密度（SED）、氧含量、H2O含量、NO和SO2浓度对Hg0转化效率的影响。基于实验结果和DFT模拟结果，阐明了催化氧化的机理。结果表明，与MnCu/Ti偶联后，温和条件下DBD反应器中Hg0的转化效率从42.9%提高到86.7%，能耗从0.77 mg Hg0/kWh降低到1.56 mg Hg0/kWh。