Multi-layered Microreactor System with Methanol Reformer for Small PEMFC

Kawamura, Yoshihiro; Ogura, Naotsugu; Yahata, Takashi; Yamamoto, Kazuto; Terazaki, Tsutomu; Yamamoto, Tadao; Igarashi, Akira

doi:10.1252/jcej.38.854

Cited by 15 publications

(13 citation statements)

References 5 publications

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“…A multi-layered microreactor system with a methanol reformer to supply hydrogen for a small PEFC to be used as a power source for portable electronic devices was developed 17) . The microreactor consists of four units (a methanol reformer with catalytic combustor, a CO remover, and two vaporizers), and was designed using thermal simulations to establish the appropriate temperature distribution for each reaction, as shown in Fig.…”

Section: Multi-layered Microreactor System With Methanol Reformer Formentioning

confidence: 99%

Hydrogen Production by Methanol Steam Reforming Using Microreactor

Kawamura¹,

Ogura²,

Igarashi³

2013

J. Jpn. Petrol. Inst.

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A microreactor technology, in which a microchannel is used as a catalytic reaction field in order to supply hydrogen to a small polymer electrolyte fuel cell (PEFC) for portable electronic devices, was described. The reduction of heat loss in the microreactor is the primary requirement for improving system efficiency, since heat release in microreactors is higher than in conventional reactors due to the increased specific surface area. Therefore, the methanol steam reforming, operated below 300 , is an appropriate process for the hydrogen production using the microreactor. First, the high-performance Cu/ZnO/Al2O3 catalyst for methanol reforming at low temperature was developed under the optimized preparation condition. The miniaturized methanol reformer was then developed to utilize this Cu/ZnO/Al2O3 catalyst. The length of the microchannel was determined based on one-dimensional mass and heat balance analyses. The microreactor was fabricated from silicon and glass substrates using a number of microfabrication techniques. Methanol reforming using this reactor has been demonstrated to reach the levels necessary to power a 1 W-class small PEFC system. The multilayered integrating the miniature methanol reformer with a CO remover, a catalytic combustor as a heat source for methanol reforming, vaporizers, and several necessary functional elements for hydrogen production has also been successfully fabricated. Finally, the microreactor system has been demonstrated to produce hydrogen at a rate sufficient to generate electrical power of 2.5 W.

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Section: Multi-layered Microreactor System With Methanol Reformer Formentioning

confidence: 99%

Hydrogen Production by Methanol Steam Reforming Using Microreactor

Kawamura¹,

Ogura²,

Igarashi³

2013

J. Jpn. Petrol. Inst.

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“…From reaction temperature, handling, energy density, and cost points of view, methanol is the most well‐balanced and promising fuel for hydrogen production at microscale . In 2007, Casio Computer, Japan developed the most sophisticate micro‐methanol reformer shown in Figure .…”

Section: Micro‐fuel Reformermentioning

confidence: 99%

“…From reaction temperature, handling, energy density, and cost points of view, methanol is the most well-balanced and promising fuel for hydrogen production at microscale. [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] In 2007, Casio Computer, Japan developed the most sophisticate micromethanol reformer shown in Figure 11. 45 As shown in Figure 11(a), it is composed of a fuel vaporizer, a steam reforming reactor, a carbon monoxide remover, and a catalytic combustor, and packaged in a vacuum container to minimize heat dissipation.…”

Section: Micro-fuel Reformermentioning

confidence: 99%

Fuel cells and their components based on microsystem technology

Tanaka

2012

WIREs Energy & Environment

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This paper briefly reviews a variety of microdevices for miniaturized fuel‐cell applications. Research and development in this field have been activated since late 1990s, when portable information devices, for example, laptop computers and cellular phones, were getting popular, but battery life was quite limited. To date, different types of micro‐fuel cell, micro‐fuel reformers, fuel handling microfluidic devices, and so on were developed, and some of them were installed and used in prototyped miniaturized fuel‐cell systems. In this paper, selected examples are introduced, and problems/challenges as well as achievements are summarized. This article is categorized under: Fuel Cells and Hydrogen > Science and Materials Fuel Cells and Hydrogen > Systems and Infrastructure

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“…Fukuhara et al proposed a two-dimensional model of a membrane reactor of dehydrogenation of ethylbenzene, in which both material and energy balance were considered [38]. So far, methanol reforming in a double-jacketed membrane reactor has been studied by computer simulation with fixed amount of methanol feeding [35,39,40]. However, the simulation of a self-energy balanced double-jacketed reactor with exhausted effluents as the combustion reactants has not been studied.…”

Section: Introductionmentioning

confidence: 99%

Mathematical simulation of hydrogen production via methanol steam reforming using double-jacketed membrane reactor

2007

International Journal of Hydrogen Energy

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Multi-layered Microreactor System with Methanol Reformer for Small PEMFC

Cited by 15 publications

References 5 publications

Hydrogen Production by Methanol Steam Reforming Using Microreactor

Hydrogen Production by Methanol Steam Reforming Using Microreactor

Fuel cells and their components based on microsystem technology

Mathematical simulation of hydrogen production via methanol steam reforming using double-jacketed membrane reactor

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