钒基催化剂同步去除燃煤烟气中甲苯与NOx研究

采用不同工艺制备V₂O₅-WO₃-MoO_x/TiO₂堇青石整体式催化剂，以甲苯和NO为探针分子，考察了Mo的负载量、涂覆方法、粘结剂的种类等制备工艺对整体式催化剂性能的影响，用XRD、SEM-EDS、FT-IR、BET等技术对催化剂进行了表征分析.结果表明，采用涂敷法，以添加量为1%的甲基纤维素为粘结剂所制备的V1W6Mo3/TiO₂堇青石蜂窝陶瓷整体式催化剂具有最优活性和稳定性（T₉₀为307℃，负载率为28.26%，脱落率为6.81%），在燃煤烟气中具有优异的同步去除VOCs与NO性能，甲苯去除率可达99%，NO去除率为100%，N₂选择性为99%.XRD、SEM-EDS表明V、W、Mo活性组分分布均匀且高度分散.FT-IR证明添加甲基纤维素的整体式催化剂具有优异的抗硫性能.

Synergistic removal of toluene and NOx on vanadium-based catalyst

V₂O₅-WO₃-MoO_x/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.