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Researchers Create Catalysts for Use in Hydrogen Storage Materials
March 25, 2009A team of scientists from Virginia Commonwealth University, the University of Uppsala in Sweden, and the Savannah River National Laboratory have identified that carbon nanostructures can be used as catalysts to store and release hydrogen, a finding that may point researchers toward developing the right material for hydrogen storage for use in cars.
Scientific findings indicate that hydrogen has all the makings of an ideal alternative fuel because it is clean, renewable and abundant, but there are challenges to safely and efficiently store it.
"Currently there are no hydrogen storage materials that meet industry requirements. Our work paves the way to design and synthesize new and improved catalysts for the dehydrogenation of complex hydrides, taking us one step closer to finding the right material for hydrogen storage," said Puru Jena, Ph.D., distinguished professor in the VCU Department of Physics.
According to Jena, complex hydrides are a class of materials that have shown promise for the storage of hydrogen. Because complex hydrides are not reversible and removing hydrogen from them is difficult at temperatures less than 100°C, catalysts are needed to improve the reaction rates. However, previous studies indicate that the addition of catalysts creates defects in the hydrides.
The experimental group led by Ragaiy Zidan, Ph.D., a researcher at the Savannah National Laboratory, developed a solvent technique which allowed the introduction of carbon fullerenes and nanotubes without introducing any defects and also functioned as catalysts. Jena and the team at the University of Uppsala led by Rajeev Ahuja, Ph.D., performed theoretical calculations to illustrate the mechanism of how these catalysts work.
The study appears online and in the journal Nano Letters, a publication of the American Chemical Society. The work was supported by a grant from the U.S. Department of Energy.
Virginia Commonwealth University
According to Jena, complex hydrides are a class of materials that have shown promise for the storage of hydrogen. Because complex hydrides are not reversible and removing hydrogen from them is difficult at temperatures less than 100°C, catalysts are needed to improve the reaction rates. However, previous studies indicate that the addition of catalysts creates defects in the hydrides.
The experimental group led by Ragaiy Zidan, Ph.D., a researcher at the Savannah National Laboratory, developed a solvent technique which allowed the introduction of carbon fullerenes and nanotubes without introducing any defects and also functioned as catalysts. Jena and the team at the University of Uppsala led by Rajeev Ahuja, Ph.D., performed theoretical calculations to illustrate the mechanism of how these catalysts work.
The study appears online and in the journal Nano Letters, a publication of the American Chemical Society. The work was supported by a grant from the U.S. Department of Energy.
Virginia Commonwealth University
Hydrogen Storage Current Events and Hydrogen Storage News RSSComputer predicts reactions between molecules and surfaces, with 'chemical precision'
Good news for heterogeneous catalysis and the hydrogen economy: computers can now be used to make accurate predictions of the reactions of (hydrogen) molecules with surfaces. An international team of researchers, headed by Leiden theoretical chemist Geert-Jan Kroes, published on this subject this week in the journal Science.
Hydrogen Storage Gets New Hope
A new method for "recycling" hydrogen-containing fuel materials could open the door to economically viable hydrogen-based vehicles.
Delaware State U. scientists refine hydrogen fuel-cell vehicle power plants
Hydrogen fuel-cell vehicles (FCVs) can be an important part of the solution to America's energy crisis, says Dr. Andrew Goudy of Delaware State University. He is leading a research team striving to solve a key technical FCV puzzle.
Researchers demonstrate reversible generation of a high capacity hydrogen storage material
Researchers at the U.S. Department of Energy's Savannah River National Laboratory have created a reversible route to generate aluminum hydride, a high capacity hydrogen storage material.
Feather fibers fluff up hydrogen storage capacity
Scientists in Delaware say they have developed a new hydrogen storage method - carbonized chicken feather fibers - that can hold vast amounts of hydrogen, a promising but difficult to corral fuel source, and do it at a far lower cost than other hydrogen storage systems under consideration.
A touch of potassium yields better hydrogen-storage materials
An international research team, including Professor Rajeev Ahuja's research group at Uppsala University, has shown that small additions of potassium drastically improve the hydrogen-storage properties of certain types of hydrogen compounds.
New storage system design brings hydrogen cars closer to reality
Researchers have developed a critical part of a hydrogen storage system for cars that makes it possible to fill up a vehicle's fuel tank within five minutes with enough hydrogen to drive 300 miles.
Revealing new applications for carbon nanomaterials in hydrogen storage
An international research team, involving Professor Rajeev Ahuja at Uppsala University and researchers in the USA, set out to understand the mechanism behind the catalytic effects of carbon nanomaterials.
Hydrogen tank lighter than battery
Dutch-sponsored researcher Robin Gremaud has shown that an alloy of the metals magnesium, titanium and nickel is excellent at absorbing hydrogen.
Metal-organic frameworks feel the pressure of Argonne scientists
Scientists at U.S. Department of Energy's Argonne National laboratory are putting the pressure on metal-organic frameworks (MOF).
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