Affordable Access

Access to the full text

Surface Modification of Cu-SSZ-13 with CeO2 to Improve the Catalytic Performance for the Selective Catalytic Reduction of NO with NH3

Authors
  • Shi, D.1
  • Feng, J.1
  • Wang, J.1
  • Zhao, W.1
  • Li, X.1
  • 1 State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, China , Taiyuan (China)
Type
Published Article
Journal
Kinetics and Catalysis
Publisher
Pleiades Publishing
Publication Date
Sep 01, 2020
Volume
61
Issue
5
Pages
750–757
Identifiers
DOI: 10.1134/S0023158420050109
Source
Springer Nature
Keywords
License
Yellow

Abstract

AbstractA series of [email protected] catalysts with surface modification with CeO2 was prepared by the modified self-resemble method based on the one-pot synthesized Cu-SSZ-13 catalyst and applied for the selective catalytic reduction of NO by NH3. The low-temperature catalytic activity and the tolerance to SO2 + H2O of [email protected] were found to enhance markedly compared with Cu-SSZ-13. In parallel, the XRD, N2-BET, H2-TPR, SEM, XPS, and in situ DRIFTS were performed to characterize the catalysts. XRD and SEM results proved that the surface of Cu-SSZ-13 was covered by nanoparticles of CeO2. XPS results further confirmed that Ce species were in the outer of the catalysts. N2-BET indicated that the physical structure parameters of the [email protected] were changed obviously due to the coverage of CeO2. H2-TPR suggested that the redox properties of the [email protected] catalysts were improved compared to the unmodified Cu-SSZ-13. In situ DRIFTS results demonstrated that the intensities of the bands attributed to NH3 and NOx species on the surface of [email protected] enhanced due to the CeO2 modification, which played an important role for the NH3-SCR performance.

Report this publication

Statistics

Seen <100 times