The promotion effect of nickel and lanthanum on Cu-ZSM-5 catalyst in NO direct decomposition

A number of M-Cu-ZSM-5 (M = La, Ni, La-Ni) samples were prepared via an aqueous solution ion-exchange method. The co-doping with Ni and La into a Cu-ZSM-5 catalyst enhanced the NO decomposition activity in a temperature range 350–550 °C. The characterization results indicate that doping with La effectively improved the dispersion of the Cu species forming more Cu2+ ions in the sample, while the effect of Ni is likely to facilitate the implantation of Cu2+ to form (Cu2+-O2–-Cu2+)2+ dimers. The synergistic effect of La and Ni contributes to the increased (Cu2+-O2−-Cu2+)2+ content in the co-doped sample, thus enhancing the NO decomposition activity.

Keywords

Cu-ZSM-5, Emission control, Ni and La doping, NO decomposition

DOI

10.1016/j.cattod.2018.05.002

Citation

Liu , M , Zhao , Y , Zhao , H , Li , X , Ma , Y , Yong , X , Chen , H & Li , Y 2019 , ' The promotion effect of nickel and lanthanum on Cu-ZSM-5 catalyst in NO direct decomposition ' , Catalysis Today , vol. 327 , pp. 203-209 . https://doi.org/10.1016/j.cattod.2018.05.002

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-201905062700

Collections

[article-cris] Kemian tekniikan korkeakoulu / CHEM

Show all metadata