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http://dx.doi.org/10.7464/ksct.2020.26.3.196

Effect of Promoter on the Decomposition of Eco-Frendly Liquid Monopropellant on Cu/hexaaluminate Pellet Catalyst  

Kim, Munjeong (Department of Chemical Engineering, Kongju National University)
Kim, Wooram (Department of Environmental Science and Engineering, Kyung Hee University)
Jo, Young Min (Department of Environmental Science and Engineering, Kyung Hee University)
Jeon, Jong Ki (Department of Chemical Engineering, Kongju National University)
Publication Information
Clean Technology / v.26, no.3, 2020 , pp. 196-203 More about this Journal
Abstract
In this study, a Cu/hexaaluminate catalyst was prepared by a co-precipitation method, and then a binder was added to form a pellet. A catalyst in which Ni and Ru promoters were added to a Cu/hexaaluminate pellet catalyst was prepared. This study focused on examining the effect of the addition of Ni and Ru promoters on the properties of Cu/hexaaluminate catalysts and the decomposition reaction of ADN-based liquid monopropellants. Cu/hexaaluminate catalysts had few micropores and well-developed mesopores. When Ru was added as a promoter to the Cu/hexaaluminate pellet catalyst, the pore volume and pore size increased significantly. In the thermal decomposition reaction of ADN-based liquid monopropellant, the decomposition onset temperature was 170.2 ℃. Meanwhile, the decomposition onset temperature was significantly reduced to 93.5 ℃ when the Cu/hexaaluminate pellet catalyst was employed. When 1% or 3% of Ru were added as a promoter, the decomposition onset temperatures of ADN-based liquid monopropellant were lowered to 91.0 ℃ and 83.3 ℃, respectively. This means that the Ru promoter is effective in lowering the decomposition onset temperature of the ADN-based liquid monopropellant because the Ru metal has excellent activity in the decomposition reaction of ADN-based liquid monopropellant, simultaneously contributing to the increase of the pore volume and pore size. After the thermal treatment at 1,200 ℃ and decomposition of ADN-based liquid monopropellant were repeatedly performed, it was confirmed that the addition of Ru could enhance the heat resistance of the Cu/hexaaluminate pellet catalyst.
Keywords
Ionic liquid monopropellant; Decomposition; Ru promoter; Cu/hexaaluminate pellet catalyst; Ammonium dinitramide;
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Times Cited By KSCI : 2  (Citation Analysis)
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