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Effect of Oxidants on Syngas Synthesis from Biogas over 3 wt % Ni-Ce-MgO-ZrO 2 /Al 2 O 3 Catalyst

Author

Listed:
  • Danbee Han

    (Department of Environmental and Energy Engineering, University of Suwon, Hwaseong-si 18323, Korea)

  • Yunji Kim

    (Department of Environmental and Energy Engineering, University of Suwon, Hwaseong-si 18323, Korea)

  • Wonjun Cho

    (Bio Friends Inc., Yuseong-gu, Daejeon 34028, Korea)

  • Youngsoon Baek

    (Department of Environmental and Energy Engineering, University of Suwon, Hwaseong-si 18323, Korea)

Abstract

The utilization of fossil fuels has led to a gradual increase in greenhouse gas emissions, which have accelerated global climate change. Therefore, there is a growing interest in renewable energy sources and technologies. Biogas has gained considerable attention as an abundant renewable energy resource. Common biogases include anaerobic digestion gas and landfill gas, which can be used to synthesize high-value-added syngas through catalytic reforming. Because syngas (CO and H 2 ) is synthesized at high reaction temperature, carbon is generated by the Boudouard reaction from CO and CH 4 cracking; thus, C blocks the pores and surface of the catalyst, thereby causing catalyst deactivation. In this study, a simulation was performed to measure the CH 4 and CO 2 conversion rates and the syngas yield for different ratios of CO 2 /CH 4 (0.5, 1, and 2). The simulation results showed that the optimum CO 2 /CH 4 ratio is 0.5; therefore, biogas reforming over the 3 wt% Ni/Ce-MgO-ZrO 2 /Al 2 O 3 catalyst was performed under these conditions. CH 4 and CO 2 conversion rates and the syngas yield were evaluated by varying the R values ( R = (CO 2 + O 2 )/CH 4 ) on the effect of CO 2 and O 2 oxidants of CH 4 . In addition, steam was added during biogas reforming to elucidate the effect of steam addition on CO 2 and CH 4 conversion rates. The durability and activity of the catalyst after 200-h biogas reforming were evaluated under the optimal conditions of R = 0.7, 850 °C, and 1 atm.

Suggested Citation

  • Danbee Han & Yunji Kim & Wonjun Cho & Youngsoon Baek, 2020. "Effect of Oxidants on Syngas Synthesis from Biogas over 3 wt % Ni-Ce-MgO-ZrO 2 /Al 2 O 3 Catalyst," Energies, MDPI, vol. 13(2), pages 1-14, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:2:p:297-:d:306153
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    References listed on IDEAS

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    1. Jang, Won-Jun & Jeong, Dae-Woon & Shim, Jae-Oh & Kim, Hak-Min & Roh, Hyun-Seog & Son, In Hyuk & Lee, Seung Jae, 2016. "Combined steam and carbon dioxide reforming of methane and side reactions: Thermodynamic equilibrium analysis and experimental application," Applied Energy, Elsevier, vol. 173(C), pages 80-91.
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    Cited by:

    1. Danbee Han & Seungcheol Shin & Haneul Jung & Wonjun Cho & Youngsoon Baek, 2023. "Hydrogen Production by Steam Reforming of Pyrolysis Oil from Waste Plastic over 3 wt.% Ni/Ce-Zr-Mg/Al 2 O 3 Catalyst," Energies, MDPI, vol. 16(6), pages 1-14, March.
    2. Józef Ciuła & Violetta Kozik & Agnieszka Generowicz & Krzysztof Gaska & Andrzej Bak & Marlena Paździor & Krzysztof Barbusiński, 2020. "Emission and Neutralization of Methane from a Municipal Landfill-Parametric Analysis," Energies, MDPI, vol. 13(23), pages 1-18, November.

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