Praseodymium-Doped Ce0.5Co0.5O2 Catalyst for Use on the Ethanol Steam Reforming to Produce Hydrogen

Chen, Ya Ping; Chuang, Chen Lung; Jeng, Pei Di; Wu, Ruei Ci; Wang, Chen Bin

doi:10.18052/www.scipress.com/ILCPA.66.13

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Praseodymium-Doped Ce_0.5Co_0.5O₂ Catalyst for Use on the Ethanol Steam Reforming to Produce Hydrogen

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Abstract:

The catalytic performance of ethanol steam reforming (ESR) reaction was investigated on a praseodymium (Pr) dopant to modify Ce_0.5Co_0.5O₂ catalyst. The Ce_0.5Co_0.5O₂ catalyst was prepared by co-precipitation-oxidation method with NaOH precipitant and H₂O₂ oxidant. Doped 5 and 10 wt% Pr (Pr₅-Ce-Co and Pr₁₀-Ce-Co) catalysts were prepared by an incipient wetness impregnation method and reduced at 250 and 400 °C (H250 and H400). All samples were characterized by using XRD, TPR, BET, EA, TG and TEM techniques at various stages of the catalyst. The results indicated that the doped Pr improved the activity and products distribution, and depressed the deposited carbon. The Pr₁₀-Ce-Co-H400 sample was a highly active and stable among these catalysts, where the hydrogen distribution approached 72% at 475 °C and only minor C₁ (CO and CH₄) species were detected. In addition, the ethanol conversion still remained complete, and the selectivity of hydrogen exceeded 70% during a 100 h time-on-stream test at 400 °C. The high oxygen storage capacity (OSC) and high accessible oxygen for this catalyst allowed oxidation/gasification of deposited carbon as soon as it formed, and less coke was detected.

Info:

Periodical:

International Letters of Chemistry, Physics and Astronomy (Volume 66)

Pages:

13-24

DOI:

https://doi.org/10.18052/www.scipress.com/ILCPA.66.13

Citation:

Y. P. Chen et al., "Praseodymium-Doped Ce_0.5Co_0.5O₂ Catalyst for Use on the Ethanol Steam Reforming to Produce Hydrogen", International Letters of Chemistry, Physics and Astronomy, Vol. 66, pp. 13-24, 2016

Online since:

May 2016

Authors:

Ya Ping Chen, Chen Lung Chuang, Pei Di Jeng, Ruei Ci Wu, Chen Bin Wang

Keywords:

Ce_0.5Co_0.5O₂ Catalyst, Ethanol Steam Reforming, Hydrogen Production

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Open Access

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Creative Commons Attribution 4.0 International License

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