[Bis(imidazolyl)–BH2]+[Bis(triazolyl)–BH2]− Ionic Liquids with High Density and Energy Capacity |
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| Authors: | Nianming Jiao Prof Yanqiang Zhang Hao Li Dr Long Liu Prof Suojiang Zhang |
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| Institution: | 1. Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China;2. University of Chinese Academy of Sciences, Beijing, China;3. School of Chemistry Engineering, China University of Petroleum (Beijing), Beijing, China |
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| Abstract: | Bis(imidazolyl)–BH2]+bis(triazolyl)–BH2]? and bis(imidazolyl)–BH2]+tris(triazolyl)–BH]? were synthesized, the cations and anions of which were functionalized with B?H groups and azoles. As B?H groups contribute to the hypergolic activity and azole groups improve the energy output, the resulting ionic liquids exhibited ignition delay times as low as 20 ms and energy outputs as high as 461.1 kJ mol?1. In addition, densities (1.07–1.22 g cm?3) and density‐specific impulse (≈360 s g cm?3) values reached a relatively high level. These ionic liquids show great promise as sustainable rocket fuels. |
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| Keywords: | borohydrides energy ionic liquids nitrogen heterocycles propellants |
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