Guanidinium octahydrotriborate: an ionic liquid with high hydrogen storage capacity
| Autor: | Weidong Chen, Teng He, Zhao Li, Hua-Kun Liu, Ping Chen, Zaiping Guo, Zhenguo Huang, Guotao Wu, Juner Chen |
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| Rok vydání: | 2015 |
| Předmět: |
Hydrogen
Renewable Energy Sustainability and the Environment Inorganic chemistry Ammonia borane chemistry.chemical_element Ionic bonding Boranes Guanidinium Cation 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Hydrogen carrier Hydrogen storage chemistry Ionic liquid General Materials Science 0210 nano-technology |
| Zdroj: | Journal of Materials Chemistry A. 3:11411-11416 |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | For chemical hydrogen storage, capacity is one key criterion that has spurred intense efforts to investigate compounds with high hydrogen content. The guanidinium cation and the octahydrotriborate anion possess 6 H+ and 8 H−, respectively. The combination of these two ions yields guanidinium octahydrotriborate with 13.8 wt% hydrogen. This paper presents its facile synthesis, as confirmed by 11B and 1H nuclear magnetic resonance spectroscopy. The results show that guanidinium octahydrotriborate is an ionic liquid with a melting point below −10 °C, which makes it a possible injectable/pumpable hydrogen carrier. It decomposes selectively to hydrogen, in stark contrast to the formation of various boranes from related solid octahydrotriborates. The much improved H2 purity can be ascribed to the more effective combination of H+ and H−, and the higher H+/H− ratio in liquid guanidinium octahydrotriborate. |
| Databáze: | OpenAIRE |
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