Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy

Chien, Andrew C.; Ye, Nicole J.; Huang, Chao-Wei; Tseng, I-Hsiang

doi:10.3390/catal11060731

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Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy

¹

Department of Chemical Engineering, Feng Chia University, Taichung 40724, Taiwan

²

Green Energy Development Center, Feng Chia University, Taichung 40724, Taiwan

³

Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 80778, Taiwan

^*

Author to whom correspondence should be addressed.

Catalysts 2021, 11(6), 731; https://doi.org/10.3390/catal11060731

Submission received: 6 May 2021 / Revised: 10 June 2021 / Accepted: 10 June 2021 / Published: 14 June 2021

(This article belongs to the Special Issue Catalytic Oxidation of Hydrocarbons)

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Abstract

We investigated the performance of nickel/samarium-doped ceria (Ni/SDC) nanocatalysts on the catalytic partial oxidation of methane (CPOM). Studies of temperature-programmed surface reaction and reduction reveal that catalytic activity is determined by a synergistic effect produced by Ni metals and metal-support interaction. Catalytic activity was more dependent on the Ni content below 600 °C, while there is not much difference for all catalysts at high temperatures. The catalyst exhibiting high activities toward syngas production (i.e., a CH₄ conversion >90% at 700 °C) requires a medium Ni-SDC interaction with an Sm/Ce ratio of about 1/9 to 2/8. This is accounted for by optimum oxygen vacancies and adequate ion diffusivity in the SDCs which, as reported, also display the highest ion conductivity for fuel cell applications.

Keywords: Ni/SDC; microwave; syngas; metal-support; partial oxidation of methane; fuel cell

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MDPI and ACS Style

Chien, A.C.; Ye, N.J.; Huang, C.-W.; Tseng, I.-H. Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy. Catalysts 2021, 11, 731. https://doi.org/10.3390/catal11060731

AMA Style

Chien AC, Ye NJ, Huang C-W, Tseng I-H. Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy. Catalysts. 2021; 11(6):731. https://doi.org/10.3390/catal11060731

Chicago/Turabian Style

Chien, Andrew C., Nicole J. Ye, Chao-Wei Huang, and I-Hsiang Tseng. 2021. "Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy" Catalysts 11, no. 6: 731. https://doi.org/10.3390/catal11060731

APA Style

Chien, A. C., Ye, N. J., Huang, C.-W., & Tseng, I.-H. (2021). Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy. Catalysts, 11(6), 731. https://doi.org/10.3390/catal11060731

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Studies of Nickel/Samarium-Doped Ceria for Catalytic Partial Oxidation of Methane and Effect of Oxygen Vacancy

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