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

Influence of lattice strain on the Ce_0.5Zr_0.5O ₂ and Al₂O₃ doped Ce_0.5Zr _0.5O₂ catalytic powders

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

Department of Resources Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Ce_0.5Zr_0.5O₂ has been widely used in three-way catalyst (TWC). However, the thermal resistance is deteriorated at high temperature due to the phase separation of Ce_0.5Zr _0.5O₂. The phase separation and crystallite growth of Ce_0.5Zr_0.5O₂ could be inhibited by adding Al ions. In this study, both the Ce_0.5Zr_0.5O₂ and A1₂O₃ doped Ce_0.5Zr_0.5O₂ catalytic powders were synthesized via chemical co-precipitation method. The phase separation of Ce_0.5Zr_0.5O₂ samples was observed as the calcination temperature was raised above 1100 °C. However, the A1₂O₃ doped Ce_0.5Zr_0.5O 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 _0.5Zr_0.5O₂ 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 Ce_0.5Zr_0.5O₂ samples had similar phenomenon but the phase separation temperature was delayed to 1200 °C due to the diffusion barrier effect of Al ions.

Original language	English
Title of host publication	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.
Pages	199-205
Number of pages	7
Volume	210
Publication status	Published - 2010
Event	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 Duration: 2008 Nov 10 → 2008 Nov 14

Publication series

Name	Ceramic Transactions
Volume	210
ISSN (Print)	1042-1122

Other

Other	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
Country	China
City	Shanghai
Period	08-11-10 → 08-11-14

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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Chuang, C. C., Hsiang, H-I., & Yen, F. S. (2010). Influence of lattice strain on the Ce_0.5Zr_0.5O ₂ and Al₂O₃ doped Ce_0.5Zr _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 Ce_0.5Zr_0.5O ₂ and Al₂O₃ doped Ce_0.5Zr _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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title = "Influence of lattice strain on the Ce0.5Zr0.5O 2 and Al2O3 doped Ce0.5Zr 0.5O2 catalytic powders",

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.",

author = "Chuang, {Chia Che} and Hsing-I Hsiang and Yen, {Fu Su}",

year = "2010",

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Chuang, CC, Hsiang, H-I & Yen, FS 2010, Influence of lattice strain on the Ce_0.5Zr_0.5O ₂ and Al₂O₃ doped Ce_0.5Zr _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 Ce_0.5Zr_0.5O ₂ and Al₂O₃ doped Ce_0.5Zr _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 proceeding › Conference 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

AN - SCOPUS:77952398235

SN - 9780470408421

VL - 210

T3 - Ceramic Transactions

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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.

T2 - 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

Y2 - 10 November 2008 through 14 November 2008

ER -

Chuang CC, Hsiang H-I, Yen FS. Influence of lattice strain on the Ce_0.5Zr_0.5O ₂ and Al₂O₃ doped Ce_0.5Zr _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).