Catalytic hydrolysis of HCN on ZSM-5 modified by Fe or Nb for HCN removal: surface species and performance

Interactions present between Fe and Nb species resulted in larger amounts of isolated Fe³⁺, Nb⁵⁺, oligomeric Fe_xO_y and Nb_xO_y clusters on zeolite catalysts, resulting in improved HCN hydrolysis.