Influence of lattice strain on the Ce0.5Zr0.5O 2 and Al2O3 doped Ce0.5Zr 0.5O2 catalytic powders

Chia Che Chuang, Hsing-I Hsiang, Fu Su Yen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Ce0.5Zr0.5O2 has been widely used in three-way catalyst (TWC). However, the thermal resistance is deteriorated at high temperature due to the phase separation of Ce0.5Zr 0.5O2. The phase separation and crystallite growth of Ce0.5Zr0.5O2 could be inhibited by adding Al ions. In this study, both the Ce0.5Zr0.5O2 and A12O3 doped Ce0.5Zr0.5O2 catalytic powders were synthesized via chemical co-precipitation method. The phase separation of Ce0.5Zr0.5O2 samples was observed as the calcination temperature was raised above 1100 °C. However, the A12O3 doped Ce0.5Zr0.5O 2 samples could maintain single phase till 1200°C. The Williamson-Hall method was employed on the X-ray peak profile of these powders to determine the variation of lattice strain. The phase separation of Ce 0.5Zr0.5O2 samples was observed due to the lattice strain induced by the occurrence of oxygen vacancies as the calcination temperature was raised to 1100 °C. The A12O3 doped Ce0.5Zr0.5O2 samples had similar phenomenon but the phase separation temperature was delayed to 1200 °C due to the diffusion barrier effect of Al ions.

Original languageEnglish
Title of host publicationCeramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp.
Pages199-205
Number of pages7
Volume210
Publication statusPublished - 2010
EventCeramic Materials and Components for Energy and Environmental Applications - 9th International Symposium on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symposium - Shanghai, China
Duration: 2008 Nov 102008 Nov 14

Publication series

NameCeramic Transactions
Volume210
ISSN (Print)1042-1122

Other

OtherCeramic Materials and Components for Energy and Environmental Applications - 9th International Symposium on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symposium
CountryChina
CityShanghai
Period08-11-1008-11-14

Fingerprint

Phase separation
Powders
Calcination
Ions
Temperature
Diffusion barriers
Oxygen vacancies
Coprecipitation
Heat resistance
X rays
Catalysts

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Chuang, C. C., Hsiang, H-I., & Yen, F. S. (2010). Influence of lattice strain on the Ce0.5Zr0.5O 2 and Al2O3 doped Ce0.5Zr 0.5O2 catalytic powders. In Ceramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp. (Vol. 210, pp. 199-205). (Ceramic Transactions; Vol. 210).
Chuang, Chia Che ; Hsiang, Hsing-I ; Yen, Fu Su. / Influence of lattice strain on the Ce0.5Zr0.5O 2 and Al2O3 doped Ce0.5Zr 0.5O2 catalytic powders. Ceramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp.. Vol. 210 2010. pp. 199-205 (Ceramic Transactions).
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abstract = "Ce0.5Zr0.5O2 has been widely used in three-way catalyst (TWC). However, the thermal resistance is deteriorated at high temperature due to the phase separation of Ce0.5Zr 0.5O2. The phase separation and crystallite growth of Ce0.5Zr0.5O2 could be inhibited by adding Al ions. In this study, both the Ce0.5Zr0.5O2 and A12O3 doped Ce0.5Zr0.5O2 catalytic powders were synthesized via chemical co-precipitation method. The phase separation of Ce0.5Zr0.5O2 samples was observed as the calcination temperature was raised above 1100 °C. However, the A12O3 doped Ce0.5Zr0.5O 2 samples could maintain single phase till 1200°C. The Williamson-Hall method was employed on the X-ray peak profile of these powders to determine the variation of lattice strain. The phase separation of Ce 0.5Zr0.5O2 samples was observed due to the lattice strain induced by the occurrence of oxygen vacancies as the calcination temperature was raised to 1100 °C. The A12O3 doped Ce0.5Zr0.5O2 samples had similar phenomenon but the phase separation temperature was delayed to 1200 °C due to the diffusion barrier effect of Al ions.",
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Chuang, CC, Hsiang, H-I & Yen, FS 2010, Influence of lattice strain on the Ce0.5Zr0.5O 2 and Al2O3 doped Ce0.5Zr 0.5O2 catalytic powders. in Ceramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp.. vol. 210, Ceramic Transactions, vol. 210, pp. 199-205, Ceramic Materials and Components for Energy and Environmental Applications - 9th International Symposium on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symposium, Shanghai, China, 08-11-10.

Influence of lattice strain on the Ce0.5Zr0.5O 2 and Al2O3 doped Ce0.5Zr 0.5O2 catalytic powders. / Chuang, Chia Che; Hsiang, Hsing-I; Yen, Fu Su.

Ceramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp.. Vol. 210 2010. p. 199-205 (Ceramic Transactions; Vol. 210).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Influence of lattice strain on the Ce0.5Zr0.5O 2 and Al2O3 doped Ce0.5Zr 0.5O2 catalytic powders

AU - Chuang, Chia Che

AU - Hsiang, Hsing-I

AU - Yen, Fu Su

PY - 2010

Y1 - 2010

N2 - Ce0.5Zr0.5O2 has been widely used in three-way catalyst (TWC). However, the thermal resistance is deteriorated at high temperature due to the phase separation of Ce0.5Zr 0.5O2. The phase separation and crystallite growth of Ce0.5Zr0.5O2 could be inhibited by adding Al ions. In this study, both the Ce0.5Zr0.5O2 and A12O3 doped Ce0.5Zr0.5O2 catalytic powders were synthesized via chemical co-precipitation method. The phase separation of Ce0.5Zr0.5O2 samples was observed as the calcination temperature was raised above 1100 °C. However, the A12O3 doped Ce0.5Zr0.5O 2 samples could maintain single phase till 1200°C. The Williamson-Hall method was employed on the X-ray peak profile of these powders to determine the variation of lattice strain. The phase separation of Ce 0.5Zr0.5O2 samples was observed due to the lattice strain induced by the occurrence of oxygen vacancies as the calcination temperature was raised to 1100 °C. The A12O3 doped Ce0.5Zr0.5O2 samples had similar phenomenon but the phase separation temperature was delayed to 1200 °C due to the diffusion barrier effect of Al ions.

AB - Ce0.5Zr0.5O2 has been widely used in three-way catalyst (TWC). However, the thermal resistance is deteriorated at high temperature due to the phase separation of Ce0.5Zr 0.5O2. The phase separation and crystallite growth of Ce0.5Zr0.5O2 could be inhibited by adding Al ions. In this study, both the Ce0.5Zr0.5O2 and A12O3 doped Ce0.5Zr0.5O2 catalytic powders were synthesized via chemical co-precipitation method. The phase separation of Ce0.5Zr0.5O2 samples was observed as the calcination temperature was raised above 1100 °C. However, the A12O3 doped Ce0.5Zr0.5O 2 samples could maintain single phase till 1200°C. The Williamson-Hall method was employed on the X-ray peak profile of these powders to determine the variation of lattice strain. The phase separation of Ce 0.5Zr0.5O2 samples was observed due to the lattice strain induced by the occurrence of oxygen vacancies as the calcination temperature was raised to 1100 °C. The A12O3 doped Ce0.5Zr0.5O2 samples had similar phenomenon but the phase separation temperature was delayed to 1200 °C due to the diffusion barrier effect of Al ions.

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M3 - Conference contribution

SN - 9780470408421

VL - 210

T3 - Ceramic Transactions

SP - 199

EP - 205

BT - Ceramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp.

ER -

Chuang CC, Hsiang H-I, Yen FS. Influence of lattice strain on the Ce0.5Zr0.5O 2 and Al2O3 doped Ce0.5Zr 0.5O2 catalytic powders. In Ceramic Materials and Components for Energy and Environmental Applications - 9th Int. Symp. on Ceramic Materials for Energy and Environmental Applications and the 4th Laser Ceramics Symp.. Vol. 210. 2010. p. 199-205. (Ceramic Transactions).