Abstract
Endothermic decomposition reaction of methylcyclohexane (MCH) was conducted to solve problems of hypersonic flight as cooling technology. A wavy form microchannel reactor (WMCR) coated with H-ZSM-5 was used to improve this reaction. WMCR coated with H-ZSM-5 was simply prepared by using binder coating method. Field emission scanning electron microscope (FE-SEM) and energy dispersive spectroscopy (EDS) analysis were used to examine the surface of WMCR coated with H-ZSM-5. Endothermic decomposition reaction of MCH was carried out in a flow reactor under supercritical conditions (823 K and 50 bar) during 30 min. The liquid products produced by catalytic reaction were analyzed by gas chromatograph-mass selective detector (GC-MSD) at 10, 20 and 30 min, respectively. The results show that an increase in H-ZSM-5 coating amount on WMCR surface for catalytic reaction had a trade-off relationship; the increase of catalysts on WMCR had a positive effect on overall improvement of heat sink (from 416.59 kJ/mol to 611.06 kJ/mol) but simultaneously negative effect for catalytic life time because of increase in catalytic deactivation (from 5.9% to 30%).
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This research was funded by a Grant-in-aid from the Korean Agency for Defense Development (ADD) funded by the Korean Defense Acquisition Program Administration (DAPA) and the Korean Ministry of National Defense (MND).
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Jeong, B.J., Shin, M.C., Jeong, B.H. et al. Preparation and characteristics of wavy form microchannel reactors coated with H-ZSM-5 for the endothermic decomposition reaction of methylcyclohexane. Korean J. Chem. Eng. 38, 1394–1402 (2021). https://doi.org/10.1007/s11814-021-0823-3
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DOI: https://doi.org/10.1007/s11814-021-0823-3