Synergistic removal of toluene and NOx on vanadium-based catalyst [钒基催化剂同步去除燃煤烟气中甲苯与NOx研究]

作者：Zhang Y.-L.; Xiao G.-F.; Li J.-H.; Du Y.-Y.; Fu M.-L.; Hu Y.^*

来源：China Environmental Science, 2021, 41(8): 3546-3554.

• Catalytic oxidation
• Coal-fired flue gas
• Monolithic catalyst
• Synergistic removal of VOCs and NOx

V2O5-WO3-MoOx/TiO2 cordierite monolithic catalyst was prepared by different synthetic methods. Using toluene and NO as probe molecules, the effects of Mo loading, coating method and binder type on the performance of monolithic catalyst were investigated. XRD, SEM-EDS, FT-IR and BET techniques were used to characterize the catalysts. The results showed that V1W6MO3/TiO2 cordierite honeycomb ceramic monolithic catalyst prepared by coating method with 1% methyl cellulose as binder had the highest activity and stability (T90=307℃, load rate=28.26%, shedding rate=6.81%), and had excellent performance of simultaneous removal of VOCs and NO in the flue gas of coal burning (toluene removal rate=99%, NO removal rate=100%, N2 selectivity=99%). XRD and SEM-EDS showed that the active components of V, W and Mo were evenly distributed and highly dispersed. FT-IR showed that the monolithic catalyst with methyl cellulose added had excellent SO2 resistance performance.

• 单位
  华南理工大学