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

Clemens, A. K. S. ; Shishkin, A. ; Carlsson, P. -A. ; Skoglundh, M. ; Martinez, Francisco LU ; Matej, Zdenek LU orcid ; Balmes, Olivier LU and Harelind, H. (2015) In ACS Catalysis 5(10). p.6209-6218
Abstract
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... (More)
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. (Less)
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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
NH3-SCR, Cu-SSZ-13, diesel exhaust aftertreatment, solid-state, ion-exchange, NOx reduction
in
ACS Catalysis
volume
5
issue
10
pages
6209 - 6218
publisher
The American Chemical Society (ACS)
external identifiers
  • wos:000362391500057
  • scopus:84942940113
ISSN
2155-5435
DOI
10.1021/acscatal.5b01200
language
English
LU publication?
yes
id
622da607-ded2-4f77-a218-a0de6d1c5d10 (old id 8221265)
date added to LUP
2016-04-01 14:10:24
date last changed
2023-08-16 12:58:49
@article{622da607-ded2-4f77-a218-a0de6d1c5d10,
  abstract     = {{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.}},
  author       = {{Clemens, A. K. S. and Shishkin, A. and Carlsson, P. -A. and Skoglundh, M. and Martinez, Francisco and Matej, Zdenek and Balmes, Olivier and Harelind, H.}},
  issn         = {{2155-5435}},
  keywords     = {{NH3-SCR; Cu-SSZ-13; diesel exhaust aftertreatment; solid-state; ion-exchange; NOx reduction}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{6209--6218}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS Catalysis}},
  title        = {{Reaction-driven Ion Exchange of Copper into Zeolite SSZ-13}},
  url          = {{http://dx.doi.org/10.1021/acscatal.5b01200}},
  doi          = {{10.1021/acscatal.5b01200}},
  volume       = {{5}},
  year         = {{2015}},
}