Hydride- and boron-free solid hypergolic H2O2-ignitophores
| Autor: | Roman Dobrovetsky, Qi-Long Yan, Michael Gozin, Shijie Zhang, Jagadish Das, Eli Flaxer, Daniel Shem-Tov, Kangcai Wang, Shuaizhong Wang, Lei Zhang, Jörg Stierstorfer |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Moisture Hydride General Chemical Engineering Hypergolic propellant chemistry.chemical_element General Chemistry Propulsion Solid fuel Environmentally friendly Industrial and Manufacturing Engineering law.invention Ignition system Chemical engineering chemistry law Environmental Chemistry Boron |
| Zdroj: | Chemical Engineering Journal. 426:131806 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2021.131806 |
| Popis: | The race and competition in aerospace technologies based on environmentally friendly green propulsion systems with green fuels and oxidizers are attracting a significant attention. Development of hybrid propulsion systems that use a hypergolic fuel and green H2O2 oxidizer, capable of deep throttling and restarting from “cold”, is a very challenging task. Here, we describe a new synthetic approach for the synthesis and characterization of conceptually new hydride- and boron-free, and air/moisture stable solid H2O2-hypergols, based on Cu and Co complexes of bis(5-tetrazolyl) amine (H2BTA) ligand. Among prepared and evaluated materials, the best performing compound [K2(H2O)2Cu(BTA)2]n (JD-4) was found to exhibit short ignition delay time of 7 ms (with H2O2, 97%), and high thermostability of 343 °C. Based on obtained ignition results, X-ray crystallography and HASEM software calculations, structure-hypergolic activity-relationship studies were conducted. We found that the electron density difference between Cu and BTA units should be in a specific range (~2) for these compounds to ignite, providing a valuable tool for further development of novel, green, solid fuels for propulsion systems. |
| Databáze: | OpenAIRE |
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