Effects of Al doping on CeZr solid solution for oxidative dehydrogenation of ethylbenzene with CO<sub>2</sub>

WU Yan-li; ZHAO Wei-jie; LI Xiao-hong; LI Wen-ying

Volume 45 Issue 2

Feb. 2017

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Article Navigation > Journal of Fuel Chemistry and Technology > 2017 > 45(2): 189-193

WU Yan-li, ZHAO Wei-jie, LI Xiao-hong, LI Wen-ying. Effects of Al doping on CeZr solid solution for oxidative dehydrogenation of ethylbenzene with CO2[J]. Journal of Fuel Chemistry and Technology, 2017, 45(2): 189-193.

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WU Yan-li, ZHAO Wei-jie, LI Xiao-hong, LI Wen-ying. Effects of Al doping on CeZr solid solution for oxidative dehydrogenation of ethylbenzene with CO₂[J]. Journal of Fuel Chemistry and Technology, 2017, 45(2): 189-193.

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Effects of Al doping on CeZr solid solution for oxidative dehydrogenation of ethylbenzene with CO₂

State Key Laboratory Training Base of Coal Science and Technology;Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province;Taiyuan University of Technology, Taiyuan 030024, China

Funds:

National High Technology Research and Development Program 2011AA05A204

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Corresponding author: Fax:0351-6018453,E-mail:ying@tyut.edu.cn
Received Date: 2016-09-23
Rev Recd Date: 2016-11-08

Available Online: 2021-01-23

Publish Date: 2017-02-10

Abstract

Abstract

For improving the oxygen storage/release capacity of ceria-zirconia solid solution, Ce_0.5Zr_0.5O₂-Al₂O₃ mixed oxides were prepared by a co-precipitation method and applied in the oxidative dehydrogenation of ethylbenzene to styrene with carbon dioxide.Ce_0.5Zr_0.5O₂-Al₂O₃ mixed oxides were characterized by powder X-ray diffraction, Raman spectroscopy, N₂-sorption, H₂ temperature-programmed reduction, and X-ray photoelectron spectroscopy.Results show that Al₂O₃ acts as a diffusion barrier.The addition of Al prevents the growth of Ce_0.5Zr_0.5O₂ crystallite size, increases the specific surface area and oxygen storage capacity of Ce_0.5Zr_0.5O₂-Al₂O₃ mixed oxides.The specific surface area and oxygen storage capacity of Ce_0.5Zr_0.5O₂-Al₂O₃ mixed oxides are 51.8 m²/g higher and 69.4 μmol/g more than those of Ce_0.5Zr_0.5O₂ mixed oxides.The ethylbenzene conversion over Ce_0.5Zr_0.5O₂-Al₂O₃ mixed oxides is about 10% higher than that over Ce_0.5Zr_0.5O₂ mixed oxides after 5 h reaction.
- ceria-zirconia solid solution,
- alumina,
- oxygen storage/release capacity,
- dehydrogenation of ethylbenzene,
- carbon dioxide

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References(25)

References

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