Preparation, characterization and kinetics of V₂O ₅-MoO₃/TiO₂/Al₂O₃ catalyst on wire-mesh honeycomb for the selective catalytic reduction of NO with NH₃

a novel V₂O₅-MoO₃/TiO₂/Al ₂O₃ metal wire-meshhoneycomb catalyst prepared by electrophoretic deposition (EPD) for the selective catalytic reduction (SCR) of NO with NH₃ was investigated. The influences of TiO₂ loading and active components loading on the SCR activity were evaluated. The experimental results show that the optimal loading of TiO₂ was 0.5 g, the optimal components for V₂O₅-MoO₃/TiO ₂/Al₂O₃ catalyst can be achieved as V (2%)-Mo (6%) /TiO₂. At the same time, body structure and surface character of catalyst prepared were characterized by SEM, XRD and XPS. Combining characterization with the results of activity test, the relation between catalyst structure and catalysis performance was analyzed, showing that the active component was uniformly distributed on the catalyst carrier as a single layer. Kinetics of SCR process on catalyst was studied based on the first order reaction and kinetic parameters were obtained as follows: frequency factor k₀ = 1845.69 s^-1, activation energy E = 30.90 KJ/mol.