Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto, 606-8501, Japan.
Angew Chem Int Ed Engl. 2017 Aug 28;56(36):10886-10889. doi: 10.1002/anie.201705452. Epub 2017 Jul 27.
A new hydrogen storage system based on the hydrogenation and dehydrogenation of nitrogen heterocyclic compounds, employing a single iridium catalyst, has been developed. Efficient hydrogen storage using relatively small amounts of solvent compared with previous systems was achieved by this new system. Reversible transformations between 2,5-dimethylpyrazine and 2,5-dimethylpiperazine, accompanied by the uptake and release of three equivalents of hydrogen, could be repeated almost quantitatively at least four times without any loss of efficiency. Furthermore, hydrogen storage under solvent-free conditions was also accomplished.
开发了一种基于氮杂环化合物加氢和脱氢的新型储氢系统，该系统使用单一的铱催化剂。与以前的系统相比，该新系统使用相对较少的溶剂即可实现高效储氢。通过该新系统，可以在至少四次重复实验中几乎定量地实现 2,5-二甲基吡嗪和 2,5-二甲基哌嗪之间的可逆转化，同时伴随着三个等效氢的吸收和释放，且没有任何效率损失。此外，还实现了无溶剂条件下的储氢。
