An　error　appeared　in　our　paper　entitled　The　Keggin　Structure:　An　Important　Factor　in　Governing　NH3-SCR　Activity　Over　the　V2O5-MoO3/TiO(2)Catalyst　published　in　Catalysis　Letters.　We　used　a　wrong　icon　in　Fig.8.　The　black　line　should　be　Cat-A-V　and　the　red　line　should　be　Cat-B-V.　The　corrected　Fig.8　is　shown　below.