Confining light metal hydrides in micro- or mesoporous scaffolds is considered to be a promising way to overcome the existing challenges for these materials, e.g. their application in hydrogen storage. Different techniques exist which allow us to homogeneously fill pores of a host matrix with the respective hydride, thus yielding well defined composite materials. For this report, the ordered mesoporous carbon CMK-3 was taken as a support for LiAlH₄ realized by a solution impregnation method to improve the hydrogen desorption behavior of LiAlH₄ by nanoconfinement effects. It is shown that upon heating, LiAlH₄ is unusually oxidized by coordinated tetrahydrofuran solvent molecules. The important result of the herein described work is the finding of a final composite containing nanoscale aluminum oxide inside the pores of the CMK-3 carbon host instead of a metal or alloy. This newly observed unusual oxidation behavior has major implications when applying these compounds for the targeted synthesis of homogeneous metal–carbon composite materials.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:39011 |
| Date | 11 June 2020 |
| Creators | Klose, Markus, Lindemann, Inge, Bonatto Minella, Christian, Pinkert, Katja, Zier, Martin, Giebeler, Lars, Nolis, Pau, Baró, Maria Dolors, Oswald, Steffen, Gutfleisch, Oliver, Ehrenberg, Helmut, Eckert, Jürgen |
| Publisher | Cambridge University Press |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 0884-2914, 2044-5326, 10.1557/jmr.2013.199 |
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