Articles online

Deactivation of Ce-Ti Oxide Catalyst by K3PO4 for the Selective Catalytic Reduction of NO with NH3

Category: Control Techniques and Strategy

Volume: 19 | Issue: 2 | Pages: 422-430
DOI: 10.4209/aaqr.2018.06.0215
PDF | Supplemental material

Export Citation:  RIS | BibTeX

Ye Jiang 1, Chengzhen Lai1, Shaojun Liu2, Guitao Liang1, Changzhong Bao1, Weiyun Shi1, Shiyuan Ma1

  • 1 College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266580, China
  • 2 State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China


K3PO4 deactivated the Ce-Ti oxide seriously.
Decrease in oxygen vacancies and surface oxygen species due to the decrease in Ce3+.
Degradation of surface Brønsted acidity and reducibility.


The effect of K3PO4 on the selective catalytic reduction of NO with NH3 over a Ce-Ti oxide catalyst was investigated using XRD, BET, XPS, NH3-TPD, H2-TPR and activity measurements. The results showed that K3PO4 deactivated the Ce-Ti oxide catalyst seriously. The drop in the amount of Ce3+ was accompanied by a decrease in oxygen vacancies and active surface oxygen species, which was disadvantageous to the SCR reaction over the Ce-Ti oxide catalyst. In addition, a reduction in the Brønsted surface acidity and reducibility was also responsible for the deactivation of the Ce-Ti oxide catalyst by K3PO4.


Selective catalytic reduction NO NH3 K3PO4 Ce-Ti oxide Activity

Related Article

Research Progress of Gaseous Polycyclic Aromatic Hydrocarbons Purification by Adsorption

Xiong Yang, Ziyi Li , Yingshu Liu , Yi Xing, Jinchao Wei, Bentao Yang, Chuanzhao Zhang, Ralph T. Yang, Chuen-Jinn Tsai
Article In Press
DOI: 10.4209/aaqr.2018.11.0398

Comparison of Dioxin Destruction in the Fly Ash and Froths under Microwave Irradiation

Han-Qiao Liu , Tong-Tong Zeng, Guo-Xia Wei, Rui Zhang, Fang Liu, Hao Wang
Article In Press
DOI: 10.4209/aaqr.2018.09.0337