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Reversible Interconversion between 2,5‐Dimethylpyrazine and 2,5‐Dimethylpiperazine by Iridium‐Catalyzed Hydrogenation/Dehydrogenation for Efficient Hydrogen Storage
Author(s) -
Fujita Kenichi,
Wada Tomokatsu,
Shiraishi Takumi
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201705452
Subject(s) - dehydrogenation , hydrogen storage , iridium , chemistry , catalysis , hydrogen , solvent , inorganic chemistry , photochemistry , organic chemistry
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.