The increasing demand for clean energy sources that do not add more carbon dioxide and other pollutants to the environment has resulted in increased attention worldwide to the possibilities of a 'hydrogen economy' as a long-term solution for a secure energy future based on potentially renewable resources. Some of the greatest challenges are the discovery and development of new on-board hydrogen-storage materials and catalysts for fuel-cell-powered vehicles. New materials that store both high gravimetric and high volumetric densities of hydrogen that can be delivered at temperatures between -20 deg C and 85 deg C are needed by the year 2015. In this study, the authors show that the kinetics of hydrogen release are significantly enhanced at low temperatures for a new hybrid material, ammonia borane infused in nanoporous silica, and that the hydrogen purity is increased. These findings suggest that hydrogen-rich materials infused in nanoscaffolds offer a most promising approach to on-board hydrogen storage.
Nanoscaffold mediates hydrogen release and the reactivity of ammonia borane
Ein Nanogerüst vermittelt die Wasserstofffreisetzung und die Reaktivität von Ammoniumboran
Angewandte Chemie ; 117 , 23 ; 3644-3648
2005
5 Seiten, 4 Bilder, 32 Quellen
Article (Journal)
English
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