Materials for the Hydrogen Economy (2007) Episode 10 ppt

... 11/18/07 5:54:25 PM 260 Materials for the Hydrogen Economy The generally accepted bifunctional mechanism for Pt/Ru-catalyzed CO oxi- dation involves the formation of either a Ru-activated H 2 O ... carbon black. It is clear that there is a growing effort in place to capitalize on the unique 5024.indb 272 11/18/07 5:54:53 PM 256 Materials for the Hydrogen Economy...

Ngày tải lên: 13/08/2014, 16:21

... in, 105 -8, 110t materials for HI x , 99 -105 phosporic acid materials, 105 separation membranes, 111-16 water separation in, 111-14 sulfuric acid, 86, 87t, 93-99, 101 t Dense membranes for hydrogen ... H has the potential to alter the performance of ferroelectric ceramics, and therefore 5024.indb 313 11/18/07 5:55:30 PM 316 Materials for the Hydrogen Economy Th...

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... 5:44:12 PM 5024.indb 10 11/18/07 5:44:11 PM xvi Materials for the Hydrogen Economy Co–polypyrrole–carbon. However, none of these have matched the catalytic perfor- mance of Pt. The electrolyte membrane ... properties. It is these properties and the current efforts in developing these materials that are described in this book. A brief introduction to the material issues...

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... H 2 /CO ratios. 20 The H-to-C mole ratios for some carbon feedstock materials are about 0.1 for wood, 1 for coal, 2 for oil, and 4 for methane. 10 In general, the higher the hydrocarbon content ... gases. The countercurrent gas ow of the syngas at the top of the gasier preheats the incoming carbon feedstock and cools the syngas. The carbon feed passes...

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... of the mem - brane from the interface between the cathode and the membrane. The degradation rate depended upon the position within an individual cell as well as the position of the cell in the ... electrolysis to generate hydrogen using heat and electricity from a high-temperature gas-cooled nuclear reactor. 5024.indb 53 11/18/07 5:45 :10 PM 48 Materials for the...

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... 5:45:55 PM 74 Materials for the Hydrogen Economy 3.5.2 hybrid SOFC–SeOC StaCkS As mentioned earlier, the SOFC mode of operation is exothermic while the SOEC mode can be endothermic, thermal neutral, ... high-temperature materials and the focus on hydrogen technologies provide the basis for rapid progress in this area. 5024.indb 76 11/18/07 5:45:45 PM 70 Materials f...

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... 30 10 4 100 0 100 10 10 4 100 0 100 10 Flux (g/m 2 h) Separation Factor FIGURE 4.22 Naon-117® performance using an HI/water/I 2 feed at 125ºC. 5024.indb 113 11/18/07 5:51:11 PM 110 Materials for ... be demonstrated 5024.indb 101 11/18/07 5:46:15 PM 98 Materials for the Hydrogen Economy The long-term corrosion performance and creep characteristics of the alloys...

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... PM 154 Materials for the Hydrogen Economy exposure but was stable thereafter. At 900°C, the ux actually increased slightly during longer exposures, and the nal ux was only ≈3% lower than the ... even in the presence of 100 µ M sulfate in the medium, and varied between 60 and 100 % of the activity of the wild-type strain measured in the absence of sulfate. In...

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... 161 11/18/07 5:52:24 PM 184 Materials for the Hydrogen Economy As noted, the majority of research into hydrogen permeation barriers has been performed in the fusion materials research community ... 5:52:56 PM 158 Materials for the Hydrogen Economy 7.1 INTRODUCTION Carbon and low-alloy steels are common structural materials for high-pressure hydrogen gas vess...

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... Materials 211 10. 2 Fluorites: ZrO 2 , CeO 2 , and Bi 2 O 3 212 10. 2.1 ZrO 2 -Based Materials 212 10. 2.2 CeO 2 -Based Materials 213 10. 2.3 Bi 2 O 3 -Based Materials 214 10. 3 Perovskites 216 10. 3.1 ... number of other factors, including system design, the other materials used to fabricate the system components, thermal requirements (including the hydride materials...

Ngày tải lên: 13/08/2014, 16:21