Summary

Original source:
http://www.sciencedaily.com/releases/2005/01/050128223148.htm

Details

• The Department of Energy's National Energy Technology Laboratory (NETL) and Carnegie Mellon University have developed a new computational modeling tool that could make the production of hydrogen cheaper as the United States seeks to expand its portfolio of alternative energy supplies.
• The research, supported by the DOE's Office of Fossil Energy and reported in the current issue of the prestigious journal "Science" published by the American Association for the Advancement of Science, predicts hydrogen flux through metal alloy separation membranes that could be used to produce pure hydrogen.
• The use of advanced computing to determine the ability of candidate membranes to produce pure hydrogen would be a time- and money-saving step for hydrogen researchers.
• Instead of having to produce a large suite of alloys with various proportions of metals--such as palladium and copper--and then test them to determine optimum compositions for maximum hydrogen purification, they could predict in advance which compositions would have the desirable properties.
• The research team at NETL in collaboration with Carnegie Mellon is investigating a new hydrogen membrane material--a copper palladium alloy--that allows hydrogen to be processed without contamination by other gases such as hydrogen sulfide during the purification process.
• "We now have a solid method in the screening of other complex alloys for the future production of hydrogen," he said.
• "Ultimately, we see our new computational tools helping to take us into the new hydrogen economy as we scramble to harness this clean fuel, increasingly driven by our long-term worries about oil supplies as well as environmental challenges," Sholl said.
• "Efficient techniques for large-scale purification of hydrogen are of world-wide interest as we work toward a hydrogen-based economy," said John Winslow, technology manager for Coal Fuels and Hydrogen at NETL.

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