Thermal analysis of cylindrical natural-gas steam reformer for 5 kW PEMFC

Jo, Taehyun; Han, Junhee; Koo, Bonchan; Lee, Do‐Hyung

doi:10.1007/s00231-016-1757-x

Cited by 7 publications

(3 citation statements)

References 22 publications

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“…This is a conservative estimate without taking into account the additional H 2 production through water gas shift reactors, usually connected in series to the reformer for H 2 purification before feeding the fuel cell. This amount of catalyst is competitive with literature reports for demonstration units of such size, [52][53][54][55][56] and where the catalyst volume is reported as being 1.8 L for a methanol reformer. 54…”

Section: Catalytic Activity For the Esrhigh Temperature Testingmentioning

confidence: 52%

Flame-pyrolysis-prepared catalysts for the steam reforming of ethanol

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Michele

et al. 2016

Catal. Sci. Technol.

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An innovative flame pyrolysis method has been employed for the preparation of Ni-based catalysts for the steam reforming of ethanol. Titania and lanthana supports, characterized by variable acidity and Ni loading have been compared, as well as different procedures to add the Ni active phase to the support, affecting metal dispersion. Samples characterization evidenced that the one pot preparation of the catalyst by flame pyrolysis resulted in the formation of a mixed oxide phase and, thus, in higher Ni dispersion even at the highest loading. The metal-support interaction was also strengthened when preparing the samples by FP than by conventional impregnation.Steam reforming at 750°C resulted in full ethanol conversion without byproducts, so that a fuel processor able to feed a 5 kWe + 5 kWt fuel cell may operate with ca. 1.35 kg of catalyst.Tests at lower temperature were also carried out, focusing on the optimization of the resistance to coking.The best results at 500°C were achieved for the FP-prepared sample supported over La2O3 and containing 15 wt% Ni as active phase.

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Section: Catalytic Activity For the Esrhigh Temperature Testingmentioning

confidence: 52%

Flame-pyrolysis-prepared catalysts for the steam reforming of ethanol

Compagnoni

Lasso

Michele

et al. 2016

Catal. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…110,111 The changes in the thermal efficiency and conversion rate with the S/C ratio and air-fuel ratio of a 5 kW proton-exchange membrane fuel cell (PEMFC) showed that the conversion rate increased linearly as the S/C ratio increased, but the thermal efficiency varied in a concave shape. 58 Despite these efforts, the economic feasibility of small-scale distributed SMR is still questionable. In some cases, it is more economical to transport hydrogen produced from a large-scale centralized facility to an on-site hydrogen station.…”

Section: Enhancement Of Feasibilitymentioning

confidence: 99%

“…110,111 The changes in the thermal efficiency and conversion rate with the S/C ratio and air–fuel ratio of a 5 kW proton-exchange membrane fuel cell (PEMFC) showed that the conversion rate increased linearly as the S/C ratio increased, but the thermal efficiency varied in a concave shape. 58…”

Section: Challenges For Small-scale Distributed Smrmentioning

confidence: 99%