Ha, Heon Phil Jung, Soon Hyo Lee, Jun Yub Hong, Sung Ho 2024-01-21T02:02:12Z 2024-01-21T02:02:12Z 2021-09-01 2006-12 1001-0521 https://pubs.kist.re.kr/handle/201004/134902 V2O5-WO3/TiO2 catalysts were prepared by impregnation method and in situ electrical conductivity measurements were carried out to investigate the reaction mechanism for ammonia SCR (selective catalytic reduction) of NOx The electrical conductivity change with ammonia supply and the increase of electrical conductivity were mainly caused by reduction of the labile surface oxygen. The electrical conductivity change of catalysts shows close relationship with the conversion rate of NOx. Variation of conversion rate in atmosphere without gaseous oxygen also supports that the labile lattice oxygen is indispensable in the initial stage of the de NO, reaction. These results suggest that the liable lattice oxygen acts decisive role in the de NOx mechanism. They also support that De NOx reaction occurs through the Eley-Rideal type mechanism. The amount of labile oxygen can be estimated from the measurement of electrical conductivity change for catalysts with ammonia supply. English NONFERROUS METALS SOCIETY CHINA VANADIA-TITANIA CATALYSTS OXIDE CATALYSTS NITRIC-OXIDE REDUCTION AMMONIA NH3 CONDUCTANCE REACTIVITY V2O5 Study on SCR De NOx mechanism through in situ electrical conductivity measurements on V2O5-WO3/TiO2 catalysts Article 1 RARE METALS, v.25, pp.77 - 83 RARE METALS 25 77 83 scie scopus 000244766500017 2-s2.0-43049149838 Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Materials Science Metallurgy & Metallurgical Engineering Article; Proceedings Paper VANADIA-TITANIA CATALYSTS OXIDE CATALYSTS NITRIC-OXIDE REDUCTION AMMONIA NH3 CONDUCTANCE REACTIVITY V2O5 De NOx selective catalytic reduction electrical conductivity lattice oxygen