Hydrogen production and thermal behavior of methanol autothermal reforming and steam reforming triggered by microwave heating

Wei-Hsin Chen, Bo Jhih Lin

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17 Citations (Scopus)

Abstract

Hydrogen production and thermal behavior of methanol autothermal reforming (ATR) triggered by microwave heating are studied. Methanol steam reforming (MSR) is also investigated for comparison. A commercial Cu-Zn-based catalyst is used. The gas hourly space velocity (GHSV) is fixed at 72,000 h-1, and the reaction temperature and the oxygen/methanol molar ratio (i.e. O2/C ratio) are in the ranges of 250-300 C and 0-0.5, respectively. The results suggest that an increase in O2/C ratio or reaction temperature diminishes the supplied energy for microwave irradiation, as a result of more oxidative reactions involved. However, the performance of methanol ATR at 300 C is lower than that at 250 C. The methanol conversion of ATR is beyond 90% at O2/C = 0.125 and 0.5, whereas it is relatively low (56-67%) at O 2/C = 0.25, presumably due to the weakened microwave irradiation and insufficient heat release. The spectrum analysis of supplied power using the fast Fourier transform (FFT) algorithm indicates that the supplied power characteristics of endothermic reactions are different from those of exothermic reactions.

Original languageEnglish
Pages (from-to)9973-9983
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number24
DOIs
Publication statusPublished - 2013 Aug 12

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Microwave heating
Steam reforming
hydrogen production
Reforming reactions
Hydrogen production
steam
Methanol
methyl alcohol
microwaves
heating
Microwave irradiation
endothermic reactions
irradiation
Exothermic reactions
exothermic reactions
Fast Fourier transforms
Spectrum analysis
spectrum analysis
Hot Temperature
catalysts

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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title = "Hydrogen production and thermal behavior of methanol autothermal reforming and steam reforming triggered by microwave heating",
abstract = "Hydrogen production and thermal behavior of methanol autothermal reforming (ATR) triggered by microwave heating are studied. Methanol steam reforming (MSR) is also investigated for comparison. A commercial Cu-Zn-based catalyst is used. The gas hourly space velocity (GHSV) is fixed at 72,000 h-1, and the reaction temperature and the oxygen/methanol molar ratio (i.e. O2/C ratio) are in the ranges of 250-300 C and 0-0.5, respectively. The results suggest that an increase in O2/C ratio or reaction temperature diminishes the supplied energy for microwave irradiation, as a result of more oxidative reactions involved. However, the performance of methanol ATR at 300 C is lower than that at 250 C. The methanol conversion of ATR is beyond 90{\%} at O2/C = 0.125 and 0.5, whereas it is relatively low (56-67{\%}) at O 2/C = 0.25, presumably due to the weakened microwave irradiation and insufficient heat release. The spectrum analysis of supplied power using the fast Fourier transform (FFT) algorithm indicates that the supplied power characteristics of endothermic reactions are different from those of exothermic reactions.",
author = "Wei-Hsin Chen and Lin, {Bo Jhih}",
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N2 - Hydrogen production and thermal behavior of methanol autothermal reforming (ATR) triggered by microwave heating are studied. Methanol steam reforming (MSR) is also investigated for comparison. A commercial Cu-Zn-based catalyst is used. The gas hourly space velocity (GHSV) is fixed at 72,000 h-1, and the reaction temperature and the oxygen/methanol molar ratio (i.e. O2/C ratio) are in the ranges of 250-300 C and 0-0.5, respectively. The results suggest that an increase in O2/C ratio or reaction temperature diminishes the supplied energy for microwave irradiation, as a result of more oxidative reactions involved. However, the performance of methanol ATR at 300 C is lower than that at 250 C. The methanol conversion of ATR is beyond 90% at O2/C = 0.125 and 0.5, whereas it is relatively low (56-67%) at O 2/C = 0.25, presumably due to the weakened microwave irradiation and insufficient heat release. The spectrum analysis of supplied power using the fast Fourier transform (FFT) algorithm indicates that the supplied power characteristics of endothermic reactions are different from those of exothermic reactions.

AB - Hydrogen production and thermal behavior of methanol autothermal reforming (ATR) triggered by microwave heating are studied. Methanol steam reforming (MSR) is also investigated for comparison. A commercial Cu-Zn-based catalyst is used. The gas hourly space velocity (GHSV) is fixed at 72,000 h-1, and the reaction temperature and the oxygen/methanol molar ratio (i.e. O2/C ratio) are in the ranges of 250-300 C and 0-0.5, respectively. The results suggest that an increase in O2/C ratio or reaction temperature diminishes the supplied energy for microwave irradiation, as a result of more oxidative reactions involved. However, the performance of methanol ATR at 300 C is lower than that at 250 C. The methanol conversion of ATR is beyond 90% at O2/C = 0.125 and 0.5, whereas it is relatively low (56-67%) at O 2/C = 0.25, presumably due to the weakened microwave irradiation and insufficient heat release. The spectrum analysis of supplied power using the fast Fourier transform (FFT) algorithm indicates that the supplied power characteristics of endothermic reactions are different from those of exothermic reactions.

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