Performance of CO preferential oxidation of CeO<sub>2</sub>-NiO nanorod catalyst in H<sub>2</sub>-rich stream

LI Shu-na; ZHU Gang; SHI Qi; DU Wei; ZHU Hua-qing; WANG Rui-yi; LI Zhi-kai; ZHANG Ya-gang

Volume 47 Issue 9

Sep. 2019

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Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(9): 1111-1119

LI Shu-na, ZHU Gang, SHI Qi, DU Wei, ZHU Hua-qing, WANG Rui-yi, LI Zhi-kai, ZHANG Ya-gang. Performance of CO preferential oxidation of CeO2-NiO nanorod catalyst in H2-rich stream[J]. Journal of Fuel Chemistry and Technology, 2019, 47(9): 1111-1119.

Citation:

LI Shu-na, ZHU Gang, SHI Qi, DU Wei, ZHU Hua-qing, WANG Rui-yi, LI Zhi-kai, ZHANG Ya-gang. Performance of CO preferential oxidation of CeO₂-NiO nanorod catalyst in H₂-rich stream[J]. Journal of Fuel Chemistry and Technology, 2019, 47(9): 1111-1119.

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Performance of CO preferential oxidation of CeO₂-NiO nanorod catalyst in H₂-rich stream

LI Shu-na^{1, 2},
ZHU Gang¹,
SHI Qi¹,
DU Wei¹,
ZHU Hua-qing^{2
,
,},
WANG Rui-yi²,
LI Zhi-kai²,
ZHANG Ya-gang^{3
,
,}

1.
Xi'an Key Laboratory on Intelligent Additive Manufacturing Technologies, the Key Laboratory for Surface Engineering and Remanufacturing in Shaanxi Province, School of Chemical Engineering, Xi'an University, Xi'an 710065, China
2.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
3.
College of Chemistry and Chemical Engineering, Xi'an University of Science and Technology, Xi'an 710054, China

Funds:

the National Natural Science Foundation of China 51704240

the National Natural Science Foundation of China 21703276

the National Natural Science Foundation of China 51602253

the Special Natural Science Foundation of Science and Technology Bureau of Xi′an City 2017CGWL24

the Special Natural Science Foundation of Science and Technology Bureau of Xi′an City 2017CGWL10

the Special Natural Science Foundation of Science and Technology Bureau of Xi′an City 2019KJWL08

the Special Natural Science Foundation of Science and Technology Bureau of Xi′an City 2019KJWL09

the Special Natural Science Foundation of Science and Technology Bureau of Xi′an City 2016CXWL08

Tianyuan Open Fund of the Key Laboratory for Surface Engineering and Remanufacturing in Shaanxi Province tywl2019-08

More Information

Corresponding author: ZHU Hua-qing, E-mail: lishuna165@126.com; ZHANG Ya-gang, E-mail: zhhq@sxicc.ac.cn, zhangyg04@126.com
Received Date: 2019-04-19
Rev Recd Date: 2019-06-28

Available Online: 2021-01-23

Publish Date: 2019-09-10

Abstract

Abstract

A series of nanorod CeO₂(x)-NiO composite oxides catalysts with different Ce/Ni molar ratios have been synthesized by hydrothermal method. Their morphology and structure were characterized by N₂ sorption-desorption, XRD, TEM, Raman spectra, H₂-TPR and XPS. The effects of Ce/Ni molar ratio on the morphology and catalytic activity of CeO₂(x)-NiO composite oxides catalysts for CO preferential oxidation (CO PROX) in hydrogen-rich stream were studied. TEM results indicate that nanorod CeO₂(x)-NiO composite oxides catalysts with different sizes can be obtained by adjusting Ce/Ni molar ratio. H₂-TPR results show that introduction of NiO into CeO₂ enhance the redox ability of CeO₂(x)-NiO composite oxides catalysts. Raman spectra and XPS results indicate that CeO₂(x)-NiO composite oxides catalysts with low nickel content have much more active oxygen species and oxygen vacancies, which are beneficial to improve its catalytic performance. CeO₂(0.89)-NiO nanorod catalysts with low nickel content exhibits the highest activity and CO₂ selectivity, the CO conversion is 100% and the CO₂ selectivity is about 52% in the reaction temperature range of 170-220 ℃ for CO PROX in hydrogen-rich stream.
- ceria,
- nickel oxide,
- nanorod,
- CO preferential oxidation,
- hydrogen-rich stream

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References(28)

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