Structural Effect of Potassium Sulfamate on Synthesis of Ammonium Dinitramide |
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Authors: | Wooram Kim Younja Kwon Young Min Jo Young Chul Park |
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Affiliation: | 1. Department of Environmental Science and Engineering, Kyung Hee University, Yongin-City, Gyeonggi-Do, South Korea;2. Fourth R&3. D, Institute Advanced Propulsion Technology Center, Agency for Defense Development, Daejeon, South Korea |
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Abstract: | Potassium sulfamate (PS) is an efficient starting material for the nitration reaction used in the synthesis of ammonium dinitramide (ADN), which is an environmentally friendly high-energy oxidizer for propellants that does not release chlorine-based compounds. PS is a core structure to form dinitramide, -N(NO2)2, by taking NO2? from nitric acid. In this work, five test batches of PS were prepared using a few solvents including ethanol, methanol, acetone, isopropanol, and their mixtures. The lab-made PSs matched well with the commercial PS in terms of the chemical structure. The use of acetone led to a high recovery of PS up to 97 w/w% and ultimately contributed to the formation of high-purity and (99.2%) and a high yield (57.3%) that are greater than those for commercial PS (87.3% purity and 31.3% yield). Therefore, we proved that the crystallinity and homogeneity of PS influenced the properties of ADN and the synthesis efficiency. |
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Keywords: | ADN potassium sulfamate propellant synthesis |
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