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Partial oxidation of methanol over a Pt/Al2O3 catalyst enhanced by sprays

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  • Chen, Wei-Hsin
  • Shen, Chun-Ting

Abstract

Reaction characteristics of POM (partial oxidation of methanol) over a Pt/Al2O3 catalyst are investigated in this study. Particular attention is paid to the POM performance enhanced by sprays. The influences of the O2-to-methanol molar ratio (the O2/C ratio), the catalyst bed with/without preheating, and the preheating temperature on POM are also examined. Compared to liquid methanol dropped onto the catalyst bed, atomized methanol can be uniformly dispersed on the catalyst bed when sprays are applied. Therefore, the POM performance is enhanced drastically by sprays. With increasing the O2/C ratio, POM progressively evolves into methanol combustion, and methane formation inherently changes from kinetically dominating mechanism to thermodynamically governing one. When sprays are practiced, the performance of POM under preheating is close to that under cold start, and an increase in preheating temperature intensifies the performance to a small extent. With the operation of sprays, the relative methanol conversion can be improved over 30%. Therefore, using sprays and cold start for POM over the Pt/Al2O3 catalyst is a feasible operation to produce syngas. From the perspectives of syngas production and methanol conversion, the optimum O2/C ratio for POM operation with sprays and cold start is located at 0.7.

Suggested Citation

  • Chen, Wei-Hsin & Shen, Chun-Ting, 2016. "Partial oxidation of methanol over a Pt/Al2O3 catalyst enhanced by sprays," Energy, Elsevier, vol. 106(C), pages 1-12.
    • Handle: RePEc:eee:energy:v:106:y:2016:i:c:p:1-12
    DOI: 10.1016/j.energy.2016.03.030
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    References listed on IDEAS

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    1. Chen, Wei-Hsin & Shen, Chun-Ting & Lin, Bo-Jhih & Liu, Shih-Chun, 2015. "Hydrogen production from methanol partial oxidation over Pt/Al2O3 catalyst with low Pt content," Energy, Elsevier, vol. 88(C), pages 399-407.
    2. Wei, Pan & Xia, Wei & Li, Jian Zhu & Long, Haifei & Chen, Jindan & Li, Ting & Fan, Meiqiang, 2015. "Single-phase Ni3Sn alloy alkali-leached for hydrogen production from methanol decomposition," Renewable Energy, Elsevier, vol. 78(C), pages 357-363.
    3. Chen, Wei-Hsin & Lin, Bo-Jhih, 2013. "Hydrogen and synthesis gas production from activated carbon and steam via reusing carbon dioxide," Applied Energy, Elsevier, vol. 101(C), pages 551-559.
    4. Chen, Wei-Hsin & Lin, Bo-Jhih & Lee, How-Ming & Huang, Men-Han, 2012. "One-step synthesis of dimethyl ether from the gas mixture containing CO2 with high space velocity," Applied Energy, Elsevier, vol. 98(C), pages 92-101.
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    Cited by:

    1. Chen, Wei-Hsin & Chen, Kuan-Hsiang & Lin, Bo-Jhih & Guo, Yu-Zhi, 2020. "Catalyst combination strategy for hydrogen production from methanol partial oxidation," Energy, Elsevier, vol. 206(C).
    2. Garcia, Gabriel & Arriola, Emmanuel & Chen, Wei-Hsin & De Luna, Mark Daniel, 2021. "A comprehensive review of hydrogen production from methanol thermochemical conversion for sustainability," Energy, Elsevier, vol. 217(C).

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