The fabrication and performance of a poly(dimethylsiloxane) (PDMS)-based microreformer for application to electronics

Ha, Ji Won; Jang, Jae Hyuck; Gil, J.H.; Kim, S.-H.

doi:10.1016/j.ijhydene.2008.02.031

Cited by 19 publications

(5 citation statements)

References 18 publications

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“…A SRM performance test was carried out at 483–573 K with the same weight of coated catalyst packed in the microreactor. After the activation of the catalyst methanol started to decompose and the conversion was above 98% at 543 K. In addition, a higher temperature was required for higher methanol conversion, but decreased with an increase of feed flow rate and was related with the steam to carbon ratio [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. According to Seo et al .…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Generation Using a CuO/ZnO-ZrO2 Nanocatalyst for Autothermal Reforming of Methanol in a Microchannel Reactor

et al. 2011

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In the present work, a microchannel reactor for autothermal reforming of methanol using a synthesized catalyst porous alumina support-CuO/ZnO mixed with ZrO2 sol washcoat has been developed and its fine structure and inner surface characterized. Experimentally, CuO/ZnO and alumina support with ZrO2 sol washcoat catalyst (catalyst slurries) nanoparticles is the catalytically active component of the microreactor. Catalyst slurries have been dried at 298 K for 5 h and then calcined at 623 K for 2 h to increase the surface area and specific pore structures of the washcoat catalyst. The surface area of BET N2 adsorption isotherms for the as-synthesized catalyst and catalyst/ZrO2 sol washcoat samples are 62 and 108 ± 2 m2g−1, respectively. The intensities of Cu content from XRD and XPS data indicate that Al2O3 with Cu species to form CuAl2O4. The EXAFS data reveals that the Cu species in washcoat samples have Cu-O bonding with a bond distance of 1.88 ± 0.02 Å and the coordination number is 3.46 ± 0.05, respectively. Moreover, a hydrogen production rate of 2.16 L h−1 is obtained and the corresponding methanol conversion is 98% at 543 K using the CuO/ZnO with ZrO2 sol washcoat catalyst.

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Section: Resultsmentioning

confidence: 99%

Hydrogen Generation Using a CuO/ZnO-ZrO2 Nanocatalyst for Autothermal Reforming of Methanol in a Microchannel Reactor

et al. 2011

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“…18 The reformation of liquid and renewable biomass materials, such as methanol and ethanol, is being studied as an alternative to natural gas, especially due to the advantage of liquid storage and transport compared to gases. 19,20 Electrolysis of water is being extensively developed as a route to hydrogen from 'green' electricity. 12 Other sources include photosynthetic microorganisms, the photoelectrolysis of water, the thermal dissociation of water and thermochemical cycles.…”

Section: 1mentioning

confidence: 99%

Carbon monoxide poisoning and mitigation strategies for polymer electrolyte membrane fuel cells – A review

Valdés-López

Mason

Shearing

et al. 2020

Progress in Energy and Combustion Science

133

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Polymer electrolyte membrane fuel cells (PEMFC) have received much attention due to their high power density, good start-stop capabilities and high gravimetric and volumetric power density compared with other fuel cells. However, certain technological challenges persist, which include the fact that conventional anode electrocatalysts are poisoned by low levels (few ppm) of carbon monoxide (CO). This review considers the mechanism of CO poisoning and the effects that it has on the PEMFC performance. The key parameters affecting CO poisoning are identified and methods used to mitigate the effects are discussed. These mitigation strategies are divided into three groups according to the means by which the technologies are applied: pre-treatment of reformate, on board removal of CO and in operando mitigation strategies.

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“…[2,3] Ah ost of such process-intensifiedc ommercial technologies are now available for processest hat involve high-throughput reaction engineering, [4] the synthesis of essential organic and inorganic materials, [3,[5][6][7] the preparation of biomedical products, [8,9] and the manufacture of explosives [10] and pharmaceutical products. [11] Microfluidicr eactors also play ap ivotal role to revolutionize the products and processes in research areas associated with self-assembled monolayers, [12,13] sensors, [14][15][16] biomedical devices, [17,18] cancer research, [19] lab-on-a-CD devices, [20] microelectronic chips, [21] and particles ynthesis. [22] Thus,i ti sn ot surprising that the design [23][24][25] and development of microreactors [26,27] that have attributes either similar to or superior to their macroscopic counterpartsh ave now become one of the most competitive areas of research.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic Electrolyzers for Production and Separation of Hydrogen from Sea Water using Naturally Abundant Solar Energy

2017

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We report the design and development of a microfluidic electrolyzer for the continuous production and in situ separation of hydrogen fuel. A series of photovoltaic cells was integrated with a microchannel to produce a high‐intensity electric field under direct solar illumination, which electrolyzed the sea water in the microchannel. The rate of hydrogen production could be varied by tuning the electric field intensity or the flow rate of the sea water. The addition of an outlet near the cathode led to the in situ separation of hydrogen in the straight‐channel electrolyzer. Hydrogen was also separated from oxygen by using a Y‐shaped electrolyzer in which the electrodes were placed on the Y‐arms. The power required for the proposed process was much lower than that of macroscopic analogues because the smaller gap between the electrodes ensured a lower electrical resistance and high‐intensity field inside the microchannel. The large‐scale integration of an array of such electrolyzers could lead to an economic, portable, continuous, and clean pathway to produce hydrogen under ambient conditions.

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The fabrication and performance of a poly(dimethylsiloxane) (PDMS)-based microreformer for application to electronics

Cited by 19 publications

References 18 publications

Hydrogen Generation Using a CuO/ZnO-ZrO2 Nanocatalyst for Autothermal Reforming of Methanol in a Microchannel Reactor

Hydrogen Generation Using a CuO/ZnO-ZrO2 Nanocatalyst for Autothermal Reforming of Methanol in a Microchannel Reactor

Carbon monoxide poisoning and mitigation strategies for polymer electrolyte membrane fuel cells – A review

Microfluidic Electrolyzers for Production and Separation of Hydrogen from Sea Water using Naturally Abundant Solar Energy

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