Effect of microchannel structure on the reaction performance of methanol steam reforming

Pan, Mei; Qiuyu, WU; Lianbo, Jiang; Zeng, Dechang

doi:10.1016/j.apenergy.2015.05.021

Cited by 72 publications

(11 citation statements)

References 17 publications

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“…The low methanol conversion in this study resulted from the microreactor structure. With optimized microchannel structure and dimensions, the methanol conversion can be improved to around 95% [41].…”

Section: Performances Of Copper-based Catalystsmentioning

confidence: 99%

Review on Copper and Palladium Based Catalysts for Methanol Steam Reforming to Produce Hydrogen

Shuai

2017

Catalysts

109

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Abstract:Methanol steam reforming is a promising technology for producing hydrogen for onboard fuel cell applications. The methanol conversion rate and the contents of hydrogen, carbon monoxide and carbon dioxide in the reformate, significantly depend on the reforming catalyst. Copper-based catalysts and palladium-based catalysts can effectively convert methanol into hydrogen and carbon dioxide. Copper and palladium-based catalysts with different formulations and compositions have been thoroughly investigated in the literature. This work summarized the development of the two groups of catalysts for methanol steam reforming. Interactions between the activity components and the supports as well as the effects of different promoters were discussed. Compositional and morphological characteristics, along with the methanol steam reforming performances of different Cu/ZnO and Pd/ZnO catalysts promoted by Al 2 O 3 , CeO 2 , ZrO 2 or other metal oxides, were reviewed and compared. Moreover, the reaction mechanism of methanol steam reforming over the copper based and palladium based catalysts were discussed.

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Section: Performances Of Copper-based Catalystsmentioning

confidence: 99%

Review on Copper and Palladium Based Catalysts for Methanol Steam Reforming to Produce Hydrogen

Shuai

2017

Catalysts

109

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“…Based on this developed model, a method was proposed to predict the trend of the velocity distribution among the microchannels with the variation of structural parameters, without applying complicated theoretical models or numerical simulation . Further, the effects of different microchannel structures and distributions on the reaction performance of a microchannel reactor for hydrogen production were experimentally investigated , . In this work, the uniformity of the velocity distribution in a laminated‐sheet microchannel reactor under different blockage conditions is investigated.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Blockage Conditions in a Laminated‐Sheet Microchannel Reactor

2017

Self Cite

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The microchannel reactor is a generally adopted laminated‐sheet structure in which several microchannel sheets with the same or different structures are laminated together and tightened by welding or other connection methods into a single reaction unit. Uniform velocity distribution among the microchannels can improve the heat and mass transfer efficiency. When one or more microchannels are blocked, the uniformity of the velocity distribution is inevitably affected. In this work, the velocity distributions among the microchannels in a single‐sheet and a double‐sheet laminated structure are investigated under different blockage conditions. It is demonstrated in detail that the different blockage conditions in the microchannels and laminated structure display different effects on the velocity value, the shape of the velocity distribution, and the evaluation parameter for uniformity.

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“…The wide application of this theory has not been limited to heat transfer field, and it has been used in different fields such as fluid flow Wechsatol et al (2001) and Gosselin et al(2005), power distribution Arion et al (2003), transportation Bejan et al (2007) and biology Heitor et al (2006) and Bejan et al (2010), etc. Pan et al (2015) experimentally studied and optimized different structures of microchannels used in methanol steam reactor. They studied the effects of both cross-section and configuration and concluded that reactor efficiency depends on configuration more than cross-section.…”

Section: Introductionmentioning

confidence: 99%

Effect of Reverting Channels on Heat Transfer Performance of Microchannels with Different Geometries

Farzaneh

Tavakoli

Salimpour

2017

JAFM

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This study investigated the effect of reverting microchannels inside a heat sink on increase of cooling rate as well as the effect of their different configurations on maximum temperature and pressure drop. Based on the convection heat transfer mechanism, selection of the embedded microchannels' configurations including circular, square and triangular ones, was studied for geometric optimization of the discussed heat sinks. The goal was to minimize the thermal resistance through optimizing the geometries. The volume ratio  was defined as the ratio of the volume taken up by microchannels to the solid volume (portion of the heat sink not occupied by microchannels) and was considered as 0.05. According to the results, in addition to obtaining a more uniform temperature distribution, reverting channels remarkably reduced the maximum temperature. Moreover, the heat sink with square shape showed less thermal resistance as compared to the other two geometries.

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Effect of microchannel structure on the reaction performance of methanol steam reforming

Cited by 72 publications

References 17 publications

Review on Copper and Palladium Based Catalysts for Methanol Steam Reforming to Produce Hydrogen

Review on Copper and Palladium Based Catalysts for Methanol Steam Reforming to Produce Hydrogen

Investigation of the Blockage Conditions in a Laminated‐Sheet Microchannel Reactor

Effect of Reverting Channels on Heat Transfer Performance of Microchannels with Different Geometries

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