Small molecules such as formic acids as well as ammonia borane and its derivatives are highly interesting for hydrogen storage. These compounds release hydrogen gas in presence of organometallic complexes as well as metal catalysts derived from such precursors at comparably low temperatures. The efficiency of such catalytic systems can be further improved by application of ionic liquids (IL) regarding: (I) stabilization of the catalyst, (II) recycling of the catalyst, (III) promoted dehydrogenation in case of ammonia borane derivatives and (IV) solubilization of hardly soluble dehydrogenated “spent‐fuel”‐ products derived from ammonia borane derivatives. All these factors imply that additional material (e. g., IL) can still be beneficial for overall efficiency of a hydrogen storage system. Moreover, the immobilization of metallic catalysts in IL also gives access to a recyclable catalyst systems regarding the challenging regeneration of the spent‐fuels (CO2 and dehydrogenated amino‐borane products). So far, there are only very few examples applying organometallic catalyst (precursors) in ionic liquid media for dehydrogenation and hydrogenation reactions for potential future hydrogen storage materials.
|Titel||Advances in Organometallic Chemistry and Catalysis : The Silver/Gold Jubilee International Conference on Organometallic Chemistry Celebratory Book|
|Status||Udgivet - 2014|
Prechtl, M. H. G., & Sahler, S. (2014). Ionic Liquids for Hydrogen Storage: Opportunities for Organometallic Chemistry. I A. Pombeiro (red.), Advances in Organometallic Chemistry and Catalysis: The Silver/Gold Jubilee International Conference on Organometallic Chemistry Celebratory Book (1 udg.). Wiley-Blackwell. http://dx.doi.org/10.1002/9781118742952.ch40