Corrigendum to “The alkali resistance of CuNbTi catalyst for selective reduction of NO by NH₃: A comparative investigation with VWTi catalyst” [Appl. Catal. B: Environ. 246 (2019) 166–179] (Applied Catalysis B: Environmental (2019) 246 (166–179), (S0926337319300499), (10.1016/j.apcatb.2019.01.049))

The authors regret to inform that figures and figure caption were wrongly published in the original article. Revised figures and caption are provided below: (1) Figure 1 in the original manuscript should be revised as below. (There lacked Fig. 1(c) and (d) in the final edition.) [Formula presented] Fig. 1 NO_x conversion and N₂ selectivity over: (a)–(b) different mass ratios of K₂O-loaded CuNbTi and VWTi catalysts and (c)–(d) different alkalis poisoning CuNbTi catalysts. Reaction conditions: [NH₃] = [NO_x] = 500 ppm, [O₂] = 5%, [H₂O] = 5%, total flow rate =500 mL min⁻¹, GHSV = 177,000 h⁻¹ and N₂ as balance. (2) “O 1 s” should be revised to “O 1s” in the caption of Fig. 3. (3) Figure 8 should be revised as below. [Figure presented] Fig. 8 (a)–(b) Possible sites for K locating at CuNbTi models and (c)–(d) the binding energy of K bonded with NbO, Nb OH, Ti O, and Ti OH. [Formula presented] represented Ti atom, [Formula presented] represented Nb atom, [Formula presented] represented Cu atom, [Formula presented] represented H atom, [Formula presented] represented O atom and [Formula presented] represented the possible locating sites for K atoms. The authors would like to apologise for any inconvenience caused.