Materials for the Hydrogen Economy (2009) Part 1 doc

... 11/18/07 5:44:14 PM xiv Materials for the Hydrogen Economy Materials issues surround the kinetics of the electrode processes and durability of the interconnect materials in the high-temperature, ... efforts have been made to publish reliable data and information, but the author and the publisher cannot assume responsibility for the validity of all materials o...

Ngày tải lên: 14/03/2014, 16:20

... introduced through a lockhopper at the top of the gasier, with oxygen and steam (H 2 O) introduced in the gasier base. Gas is pulled from the base to the top of the gasier, with the hot ash at the ... carbon feed passes through the gasier by gravity. In the top of the gasier, where the coal is preheated, moisture is driven off. Toward the base of the gas...

Ngày tải lên: 27/06/2014, 17:20

... 13 1. 8 Commercial Gasication 15 1. 9 Gasication for H 2 Production 16 1. 10 Syngas for Chemical Processing 22 1. 11 Materials of Construction 23 1. 11. 1 Liners for Gas or Liquid Feedstock 25 1. 11. 2 ... http://www1.eere.energy.gov/ hydrogenandfuelcells/storage/current_technology.html. 5024.indb 17 11 /18 /07 5:44 :15 PM 5024.indb 18 11 /18 /07 5:44 :16 PM 2 Mate...

Ngày tải lên: 12/08/2014, 03:20

... of CO 2 or other gas impurities, and the water shift gas reaction (equation 1.4). C x H y + x /2 O 2 → xCO + y /2 H 2 5 024 .indb 8 11/18/07 5:44 :26 PM 12 Materials for the Hydrogen Economy Two ... (wt%) Material (wt%) Brick Type A B C a Cr 2 O 3 90.3 87.3 81.0 Al 2 O 3 7.0 2. 5 0.4 MgO 0 .28 0. 12 17.0 ZrO 2 0.01 5 .2 NA SiO 2 0.3 0 .2 0.1 Fe +2 and +3...

Ngày tải lên: 12/08/2014, 03:20

... PM 1 26 Materials for the Hydrogen Economy 5.2.1 OxyGen-tOlerant hydrOGenaSe SyStemS The development of an O 2 -tolerant hydrogenase (by either mutagenesis of existing hydrogenases or transforming ... 130 Materials for the Hydrogen Economy 2004 and 2005 the U.S. Department of Energy started a small project at the National Renewable Energy Laboratory (NREL) to pro...

Ngày tải lên: 12/08/2014, 03:20

... low-pres- sure hydrogen gas. 5024.indb 172 11/18/ 07 5:52:49 PM 166 Materials for the Hydrogen Economy The data in gure 7. 1 through gure 7. 3 indicate that steel vessels and pipelines in hydrogen economy ... steel. 46 5024.indb 176 11/18/ 07 5:52:54 PM 168 Materials for the Hydrogen Economy The effect of various gas additives on hydrogen embrittlement...

Ngày tải lên: 12/08/2014, 03:20

... thermodynamics, there is an accompanying loss in capacity. The reversible hydrogen content for the LiBH 4 –MgH 2 couple was found to be in the range of 8 to 10 wt%, rather than 18. 4 wt% for the formula ... 2006. 5024.indb 2 08 11/ 18/ 07 5:53:26 PM 204 Materials for the Hydrogen Economy Another experimental study on the same material system was performed by...

Ngày tải lên: 12/08/2014, 03:20

... needed for practical fuel cell applications. 5024.indb 284 11/ 18/07 5:55:06 PM 282 Materials for the Hydrogen Economy range (a critical requirement for automotive applications) and, for DMFC ... on the membranes’ mechanical proper- ties and durability under the long-term automobile load cycling. 5024.indb 283 11/ 18/07 5:55:05 PM 286 Materials for the Hydrogen...

Ngày tải lên: 12/08/2014, 03:20

... 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 The observation of bubbles in ... direct injectors, the actuator is embedded in the hydrogen gas, which has the potential to affect performance by the following processes: (1) change the capaci - tance of...

Ngày tải lên: 13/08/2014, 16:21

... Gasication 15 1. 9 Gasication for H 2 Production 16 1. 10 Syngas for Chemical Processing 22 1. 11 Materials of Construction 23 1. 11. 1 Liners for Gas or Liquid Feedstock 25 1. 11. 2 Liners for Solid ... fIgure 1. 1 An air-cooled slagging gasication plant 5024.indb 2 11 /18 /07 5:44: 21 PM 5024.indb 24 11 /18 /07 5:44 :18 PM xxii Materials for the Hydrogen...

Ngày tải lên: 13/08/2014, 16:21

... according to the reaction CO + 2 H 2 → –[CH 2 ]– + H 2 O. Fischer–Tropsch 5 024 .indb 22 11/18/07 5:44:39 PM 8 Materials for the Hydrogen Economy hydrodesulfurization (see gure 1 .2) . When gasication ... (wt%) Material (wt%) Brick Type A B C a Cr 2 O 3 90.3 87.3 81.0 Al 2 O 3 7.0 2. 5 0.4 MgO 0 .28 0. 12 17.0 ZrO 2 0.01 5 .2 NA SiO 2 0.3 0 .2 0.1 Fe +2...

Ngày tải lên: 13/08/2014, 16:21

... Design 62 3. 2.1 Series-Connected Tubes 63 3.2.2 Tubular Stack Design 65 3. 2 .3 Planar Stack Design 65 3. 3 Modes of Operation 66 3. 4 Alternative Materials for High-Temperature Electrolysis 69 3. 5 Advanced ... Res., 33 , 33 3 35 9 (20 03) . 99. Kobayashi, T. et al., Study on current efciency of steam electrolysis using a partial protonic conductor SrZr 0.9 Yb 0.1 O 3- δ ,...

Ngày tải lên: 13/08/2014, 16:21

... difference in the square root of hydrogen partial pressure for the feed (pH 2 f ) and sweep (pH 2 s ) gases at 900 and 60 0°C 5024.indb 151 11/18/07 5:52:11 PM 154 Materials for the Hydrogen Economy exposure ... matrix. 5 ,6 In these cermets, the metal enhances the hydrogen permeability of the ceramic phase by increasing the elec - tronic conductivity of the...

Ngày tải lên: 13/08/2014, 16:21

... permeation barrier for MANET steel, Fusion Engineering and Design, 41, 149 (19 98) . 5024.indb 190 11/ 18/ 07 5:53:11 PM 188 Materials for the Hydrogen Economy 8. 5 SUMMARY The best hydrogen barrier ... between the host and dopant cation radii. The ionic radius for Zr 4+ is 0 .84 Å when the coordination number is 8; it is 0 .87 Å for Sc 3+ and 1.109 for Y...

Ngày tải lên: 13/08/2014, 16:21