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http://dx.doi.org/10.14478/ace.2016.1049

Synthesis and Characterization of Pyridinium Dinitramide Salt  

Kim, Wooram (Department of Applied Environmental Science, Kyung Hee University)
Kwon, Younja (Department of Applied Environmental Science, Kyung Hee University)
Jo, Youngmin (Department of Applied Environmental Science, Kyung Hee University)
Publication Information
Applied Chemistry for Engineering / v.27, no.4, 2016 , pp. 397-401 More about this Journal
Abstract
A new solid oxidizer, pyridinium dinitramide (Py-DN) is a low toxic energetic material which can be utilized as a HPGP (high performance green propellant). In this work, Py-DN was synthesized using various starting materials including potassium sulfamate, pyridine hydrochloride, strong nitric acid and sulfuric acid. Physical and chemical properties of the Py-DN were characterized using UV-Vis, FT-IR and a thermal analyzer and their properties were compared to those of previously prepared salts including ammonium dinitramide[ADN, $NH_4N(NO_2)_2$] and guanidine dinitramide[GDN, $NH_2C(NH_2)NH_2N(NO_2)_2$] in our lab. Endothermic and exothermic decomposition temperatures of Py-DN were $77.4^{\circ}C$ and $144.7^{\circ}C$, respectively. The combustion caloric value was 1739 J/g, which is thermally more sensitive than that of conventional dinitramides. It may enable to lower the decomposition temperature, which can reduce preheating temperature required for satellite thruster applications.
Keywords
Pyridinium dinitramide; liquid monopropellant; green oxidizer; thermal property; energy material;
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