Skip to main content
Journal cover image

CeO2–ZrO2–Al2O3 Modified by Selective Doping with SrO for Improved Pd-Only Three-Way Catalyst

Publication ,  Journal Article
Lan, L; Li, H; Chen, S; Yang, W; Liu, D; Wang, W; Gong, M; Chen, Y
Published in: Russian Journal of Physical Chemistry A
April 1, 2018

Composite CeO2–ZrO2–Al2O3 (CZA) modified by selective doping with SrO was prepared by simple coprecipitation method. The characterization results reveal that the structural property of the modified sample is fundamentally different from that of undoped CZA, the doped SrO can selectively combine with Al2O3 and act as a stabilizer, meanwhile homogeneous CZ solid solution is formed which appears insusceptible to Al2O3. Consequently more lattice defects are created in CZAS, which facilitate the improvement of oxygen mobility. The UV–Vis DRS and XPS results demonstrate that after doping with SrO, the supported catalyst Pd/CZAS possesses higher surface Pd and Ce3+ concentrations, which consequently leads to improved reducibility and catalytic performance. Furthermore, the synergistic effect between CeO2–ZrO2 and SrO–Al2O3 helps improve the thermal stability of Pd/CZAS. As a result, after aging treatment, Pd/CZASa still maintains improved structural, textural, morphological and reduction properties along with enhanced three-way catalytic performance.

Duke Scholars

Published In

Russian Journal of Physical Chemistry A

DOI

ISSN

0036-0244

Publication Date

April 1, 2018

Volume

92

Issue

4

Start / End Page

696 / 705

Related Subject Headings

  • Chemical Physics
  • 0307 Theoretical and Computational Chemistry
  • 0306 Physical Chemistry (incl. Structural)
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Lan, L., Li, H., Chen, S., Yang, W., Liu, D., Wang, W., … Chen, Y. (2018). CeO2–ZrO2–Al2O3 Modified by Selective Doping with SrO for Improved Pd-Only Three-Way Catalyst. Russian Journal of Physical Chemistry A, 92(4), 696–705. https://doi.org/10.1134/S0036024418040179
Lan, L., H. Li, S. Chen, W. Yang, D. Liu, W. Wang, M. Gong, and Y. Chen. “CeO2–ZrO2–Al2O3 Modified by Selective Doping with SrO for Improved Pd-Only Three-Way Catalyst.” Russian Journal of Physical Chemistry A 92, no. 4 (April 1, 2018): 696–705. https://doi.org/10.1134/S0036024418040179.
Lan L, Li H, Chen S, Yang W, Liu D, Wang W, et al. CeO2–ZrO2–Al2O3 Modified by Selective Doping with SrO for Improved Pd-Only Three-Way Catalyst. Russian Journal of Physical Chemistry A. 2018 Apr 1;92(4):696–705.
Lan, L., et al. “CeO2–ZrO2–Al2O3 Modified by Selective Doping with SrO for Improved Pd-Only Three-Way Catalyst.” Russian Journal of Physical Chemistry A, vol. 92, no. 4, Apr. 2018, pp. 696–705. Scopus, doi:10.1134/S0036024418040179.
Lan L, Li H, Chen S, Yang W, Liu D, Wang W, Gong M, Chen Y. CeO2–ZrO2–Al2O3 Modified by Selective Doping with SrO for Improved Pd-Only Three-Way Catalyst. Russian Journal of Physical Chemistry A. 2018 Apr 1;92(4):696–705.
Journal cover image

Published In

Russian Journal of Physical Chemistry A

DOI

ISSN

0036-0244

Publication Date

April 1, 2018

Volume

92

Issue

4

Start / End Page

696 / 705

Related Subject Headings

  • Chemical Physics
  • 0307 Theoretical and Computational Chemistry
  • 0306 Physical Chemistry (incl. Structural)