Hydride- and boron-free solid hypergolic H2O2-ignitophores

Das, Jagadish; Shem-Tov, Daniel; Wang, Shuaizhong; Zhang, Lei; Flaxer, Eli; Zhang, Shijie; Stierstorfer, Jörg; Wang, Kangcai; Yan, Qi-Long; Dobrovetsky, Roman und Gozin, Michael (2021): Hydride- and boron-free solid hypergolic H2O2-ignitophores. In: Chemical Engineering Journal, Bd. 426, 131806

Abstract

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 (H(2)BTA) ligand. Among prepared and evaluated materials, the best performing compound [K-2(H2O)(2)Cu(BTA)(2)]n (JD-4) was found to exhibit short ignition delay time of 7 ms (with H2O2, 97%), and high thermostability of 343 degrees 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 (similar to 2) for these compounds to ignite, providing a valuable tool for further development of novel, green, solid fuels for propulsion systems.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie > Department Chemie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 1385-8947
• Sprache: Englisch