Novel TiO₂ catalyst carriers with high thermostability for selective catalytic reduction of NO by NH₃.

ABSTRACT: A series of TiO₂ catalyst carriers with ceria additives were prepared by a precipitation method and tested for selective catalytic reduction (SCR) of NO by NH₃. These samples were characterized by XRD, N₂-BET, NH₃-TPD, H₂-TPR, TEM, XPS and in situ DRIFTS, respectively. Results showed that the appropriate addition of ceria can enhance the catalytic activity and thermostability of TiO₂ catalyst carriers significantly. The maximum catalytic activity of Ti-Ce-O_x-500 is 98.5% at 400 °C with a GHSV of 100 000 h^-1 and the high catalytic activity still remains even after the treatment at high temperature for 24 h. The high catalytic performance of Ti-Ce-O_x-500 can be attributed to a series of

SUBMITTER: Jin Q 

PROVIDER: S-EPMC6469708 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature