Wang Lemeng, Zhao Zhikai, Wang Wen, Xing Gaoshan, Zeng Fang, Qi Liqiang
Hebei Key Lab. of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding, 071003, People's Republic of China.
Environ Sci Pollut Res Int. 2023 Jan;30(2):3929-3941. doi: 10.1007/s11356-022-22434-w. Epub 2022 Aug 12.
A catalyst (V-Cu-Ce-ZSM-5) was explored to simultaneously remove the SO and NO from flue gas by use of the ZSM-5 molecular sieve as the carrier, V and Cu as the active components, and Ce as the additive in low temperature of 150 °C. The performance of V-Cu-Ce-ZSM-5 was evaluated for the oxidation of NO and SO before and after the addition of graphene oxide (GO). The results showed that V-Cu-Ce-ZSM-5@GO0.5 had the best performance at a reaction temperature of 150 °C, and the oxidation efficiency of SO and NO was 94.60% and 83.64%, respectively. The multiple structural characterizations (BET, SEM, Raman, XRD, and XPS) revealed that the loading of V and Cu with the additive Ce expanded the specific surface area and pore volume of ZSM-5, provided more adsorption sites for SO and NO, and had good desulfurization and denitration activity. The addition of GO further improved the dispersibility of active components and auxiliaries, increased the number of active sites in the reaction process, and significantly improved catalytic activity.
探索了一种催化剂（V-Cu-Ce-ZSM-5），以ZSM-5分子筛为载体，V和Cu为活性成分，Ce为添加剂，在150℃的低温下同时去除烟气中的SO和NO。评估了添加氧化石墨烯（GO）前后V-Cu-Ce-ZSM-5对NO和SO的氧化性能。结果表明，V-Cu-Ce-ZSM-5@GO0.5在150℃的反应温度下性能最佳，SO和NO的氧化效率分别为94.60%和83.64%。多种结构表征（BET、SEM、拉曼、XRD和XPS）表明，V和Cu与添加剂Ce的负载扩大了ZSM-5的比表面积和孔体积，为SO和NO提供了更多的吸附位点，并具有良好的脱硫和脱硝活性。GO的添加进一步提高了活性成分和助剂的分散性，增加了反应过程中的活性位点数量，并显著提高了催化活性。
