Hydrogen storage in organosilicon ionic liquids
| Autor: | L. M. Glukhov, Leonid M. Kustov, Grigory S. Deyko |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment Carbazole Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Ion Catalysis chemistry.chemical_compound Hydrogen storage Fuel Technology chemistry Ionic liquid Dehydrogenation 0210 nano-technology Organosilicon |
| Zdroj: | International Journal of Hydrogen Energy. 45:33807-33817 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2020.09.107 |
| Popis: | New structures of ionic liquids have been studied as liquid organic hydrogen carriers. The hydrogenation of organosilicon compounds containing a carbazole fragment was carried out for the first time. The N–(CH2)3–Si fragment in the composition of the hydrogen carrier based on organosilicon moieties was found to be more suitable than the N–CH2–Si bond. Ionic liquids with a carbazole fragment containing silicon atoms were synthesized for the first time. It was possible to significantly reduce the melting point of such ionic liquids by introducing an organosilicon linker between carbazole nitrogen and imidazolium ion. The synthesized ionic liquid is a liquid at room temperature. Hydrogenation-dehydrogenation experiments demonstrated that such ionic liquids are thermally stable up to at least 220 °C, and nearly quantitative conversion can be achieved. Both the hydrogenation and dehydrogenation processes were carried out using the same Pd/C catalyst. The theoretical total gravimetric hydrogen capacities for synthesized ionic liquids are 2.05% and 1.58%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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