We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Exploring Sustainable Rocket Fuels: [Imidazolyl-Amine-BH<sub>2</sub>]<sup>+</sup>- Cation-Based Ionic Liquids as Replacements for Toxic Hydrazine Derivatives.
- Authors
Huang, Shi; Qi, Xiujuan; Zhang, Wenquan; Liu, Tianlin; Zhang, Qinghua
- Abstract
The application of hypergolic ionic liquids as propellant fuels is a newly emerging area in the fields of chemistry and propulsion science. Herein, a new class of [imidazolyl-amine-BH2]+-cation-based ionic liquids, which included fuel-rich anions, such as dicyanamide (N(CN)2-) and cyanoborohydride (BH3CN-) anions, were synthesized and characterized. As expected, all of the ionic liquids exhibited spontaneous combustion upon contact with the oxidizer 100% HNO3. The densities of these ionic liquids varied from 0.99-1.12 gcm-3, and the heats of formation, predicted based on Gaussian 09 calculations, were between -707.7 and 241.8 kJmol-1. Among them, the salt of compound 5, that is, (1-allyl-1H-imidazole-3-yl)-(trimethylamine)-dihydroboronium dicyanamide, exhibited the lowest viscosity (168 MPas), good thermal properties (Tg<-70 °C, Td> 130 °C), and the shortest ignition-delay time (18 ms) with 100% HNO3. These ionic fuels, as "green" replacements for toxic hydrazine-derivatives, may have potential applications as bipropellant formulations.
- Subjects
ROCKET engine fuel systems; AMINES; CATIONS; IONIC liquids; HYDRAZINE derivatives; PROPELLANTS
- Publication
Chemistry - An Asian Journal, 2015, Vol 10, Issue 12, p2725
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.201500711