Evaluation of Ir/Al2O3, Ir–Ru/Al2O3 and Ru/Al2O3 catalyst performance in a 5 N satellite thruster |
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| Institution: | 1. Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, and School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, Hunan, China;2. School of Information and Electronic Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China;3. Department of Mechanical Engineering, Curtin University, Perth, WA 6845, Australia;1. Peter the Great Saint Petersburg Polytechnic University, 29 Polytechnicheskaya st, 195251 St.Petersburg, Russia;2. Saint Petersburg State Technological Institute (Technical University), 26 Moskovskiy pr., 190013 St.Petersburg, Russia;1. School of Electronic and Information Engineering, Chongqing Three Gorges University, Chongqing, Wanzhou, 404000, China;2. Chongqing Key Laboratory of Geological Environment Monitoring and Disaster Early-warning in Three Gorges Reservoir Area, Chongqing Three Gorges University, Chongqing, Wanzhou, 404000, China;3. State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, China;4. College of Materials Science and Engineering, Sichuan University, 610064, Chengdu, China;5. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Sichuan, Mianyang, 621900, China;6. School of Science, Chongqing University of Posts and Telecommunications, Nan''an District, 400065, Chongqing, China |
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| Abstract: | Ir/Al2O3, Ir–Ru/Al2O3 and Ru/Al2O3 catalysts with approximately 33% metallic content in mass were prepared in 20 impregnation steps. For the Ru catalyst, two impregnation methods were employed: incipient wetness (chlorinated precursor) and by excess volume (non-chlorinated precursor). For the remaining catalysts, only incipient wetness impregnation was used with chlorinated precursors. Catalyst textural properties were evaluated before and after catalytic tests: metallic grade, specific area, mesopore volume distribution, metallic dispersion, and metallic particle average diameter. Catalysts were tested for hydrazine (N2H4) decomposition reaction in a 5 N satellite thruster and their performances were compared to Shell 405 commercial catalyst. Results showed that catalysts containing Ir were similar in performance to Shell 405 commercial catalyst and that the catalyst containing only Ru should not be used in cold starts. |
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