Effect of V2O5/WO3-TiO2 catalyst preparation method on NOx removal from diesel exhaust
作者： Lei Pang , Chi Fan , Lina Shao , Junxia Yi , Xing Cai
DOI: 10.1016/S1872-2067(14)60218-7
关键词:
摘要: Abstract V 2 O 5 /WO 3 -TiO catalysts were prepared by conventional impregnation (VWTi-con) and ultrasound-assisted methods (VWTi-HUST). Their catalytic performance was tested for the selective reduction (SCR) of NO with NH . The effects preparation on catalyst properties studied. characterized X-ray diffraction, scanning electron microscopy, Raman photoelectron spectroscopy. Both structural investigation -SCR activity showed that method had a strong effect thermal behavior catalysts. After hydrothermal treatment, significant loss observed VWTi-con catalyst, which suffered severe sintering even formed rutile x Ti 1- solid solution, while VWTi-HUST same good stability as commercial indicating can be used in diesel after-treatment system. produced stronger interaction between vanadium species WTi support, stabilized reduced state.
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