Reaction-driven Ion Exchange of Copper into Zeolite SSZ-13

A. K. S. Clemens, A. Shishkin, P. -A. Carlsson, M. Skoglundh, Francisco Martinez, Zdenek Matej, Olivier Balmes, H. Harelind

Research output: Contribution to journalArticlepeer-review


We have used several techniques to characterize Cu-SSZ-13 before and after exposure to reaction conditions relevant for NO reduction by NH3-SCR to address the increase in NH3-SCR activity observed as a function of time on stream. Specifically, we focus on characterizing copper species in samples prepared with solid state ion exchange (SSIE) having varying Cu loadings from 0.7 to 5.2 wt %. X-ray diffraction shows that CuO species that likely remain from the SSIE synthesis on the outside of the zeolite crystallites are significantly reduced by exposure to reaction conditions. High-resolution X-ray diffraction (HR-XRD) further reveals a corresponding increase of Cu2O species. X-ray photoelectron, Auger electron, and ultraviolet -visible spectroscopy show an increase in both Cu(II) and Cu(I) species inside the zeolite pores, with a preserved long-range order of the zeolite structure as revealed by HR-XRD.
Original languageEnglish
Pages (from-to)6209-6218
JournalACS Catalysis
Issue number10
Publication statusPublished - 2015

Subject classification (UKÄ)

  • Inorganic Chemistry

Free keywords

  • NH3-SCR
  • Cu-SSZ-13
  • diesel exhaust aftertreatment
  • solid-state
  • ion-exchange
  • NOx reduction


Dive into the research topics of 'Reaction-driven Ion Exchange of Copper into Zeolite SSZ-13'. Together they form a unique fingerprint.

Cite this