Park, Yeonjae KIM, DONG HO Lee, Jung-Hyun Ha, Heon Phil Kwon, Dong Wook 2024-01-12T02:31:47Z 2024-01-12T02:31:47Z 2022-12-28 2023-03 0169-4332 https://pubs.kist.re.kr/handle/201004/75783 A series of VxNbMoTi for the selective catalytic reduction (SCR) of NO by NH3 have been synthesized to improve the SCR performance at low temperatures and the SO2 durability of vanadium-based catalysts. In this study, Nb and Mo were selected as promoters for vanadium-based catalysts in the SCR reaction, and the introduction of an appropriate amount of Nb-Mo enhanced the activity and SO2 durability at low temperatures. With the addition of Nb and/or Mo, physicochemical analysis was performed to characterize of the catalysts. The introduction of Nb-Mo into VTi increased the total amount of NH3 adsorption and improved the Vn+ (n = 3, 4) fraction. In addition, the number of oxygen vacancies and the amount of labile oxygen increased. Thus, introducing Nb-Mo into VTi increased SCR performance and enhanced resistance to SO2 and H2O in the presence of SO2 and H2O by reducing the affinity between SO2 and the catalytic surface. English Elsevier BV Unravelling the promotional effect of Nb and Mo on VOx-based catalysts for NOx reduction with NH3 Article 10.1016/j.apsusc.2022.156072 1 Applied Surface Science, v.614 Applied Surface Science 614 N scie scopus 000916160600001 Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics Article LOW-TEMPERATURE NH3-SCR REACTION SO2 RESISTANCE ENHANCED PERFORMANCE SCR MOLYBDENUM DRIFTS OXIDES DECOMPOSITION STABILITY V -based catalyst SO 2-resistance Low -temperature Molybdenum Niobium NH3-SCR