Effect of alkali metal salts on decomposition of ionic liquid like organic salt |
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| Authors: | Gyeong Cheol Jo Eun Mee Goh Seung Wook Baek Sung June Cho |
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| Institution: | 1.Department of Applied Chemical Engineering,Chonnam National University,Gwangju,Republic of Korea;2.Agency for Defense Development,Daejeon,Korea;3.Propulsion and Combustion Laboratory, School of Mechanical, Aerospace and Systems Engineering,Korea Advanced Institute of Science and Technology (KAIST),Daejeon,Republic of Korea |
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| Abstract: | N 1,N 1,N 2,N 2-tetramethylethane-1,2-diamine-based ionic salts (TMEDA), N 1,N 1,N 1,N 2,N 2,N 2-hexamethylethane-1,2-diaminium dicyanamide (HMEDA-(DCA)2) were prepared following the quaternization and subsequent ion exchange. The chemical structure of the HMEDA-(DCA)2 was confirmed using 13C NMR spectrum and elemental analysis. The corresponding viscosity of its 60 wt% solution was found to be lower than 5 cP at room temperature, which was critical for propellant application. The ignition delay of 40 wt% HMEDA-(DCA)2 solution was decreased to 20–30 ms dramatically using alkali metal salts, Li(CH3COO), Mg(CH3COO)2, and Ca(CH3COO)2 as a co-catalyst when white fume nitric acid was utilized as an oxidizer. |
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