VO(X) supported on TiO(2)–Ce(0.9)Zr(0.1)O(2) core–shell structure catalyst for NH(3)-SCR of NO

In this experiment, a TiO(2)–Ce(0.9)Zr(0.1)O(2) support with core–shell structure was successfully prepared by a precipitation method and VO(X)/TiO(2)–Ce(0.9)Zr(0.1)O(2) catalyst was prepared by an impregnation method, and the catalyst was used to catalyze the NH(3)-SCR of NO. Based on the results of HRTEM, XRD, BET, H(2)-TPR, NH(3)-TPD, XPS, Py-IR, it was speculated that due to the interaction between TiO(2) and Ce(0.9)Zr(0.1)O(2), more oxygen vacancies and Ce(3+) are generated, which are beneficial to the existence of low-valence V by electron transfer between high valence state V and Ce(3+)and increase the acidic sites on the catalyst surface. The catalytic activity (>97%) of the VO(X)/TiO(2)–Ce(0.9)Zr(0.1)O(2) catalyst is superior to the current commercial catalyst (V(2)O(5)–WO(3)/TiO(2)) and has a higher N(2) selectivity (>97.5%) at 40 000 h(−1) GHSV and 250–400 °C.