Abstract
Endothermic catalytic cracking of hydrocarbon fuel is a promising technique for active thermal protection of advanced aircrafts. Catalyst with high activity and stability is crucial for obtaining high heat-absorbing capability. Here, a series of fluoride-modified ZSM-5 catalysts (FZ) were prepared and characterized with XRD, SEM, 27Al and 29Si NMR, Ar physisorption, NH3-TPD, XRF and Py-IR. Significant changes in porosity and acidity were revealed on the fluoride-modified samples owing to framework dealumination and fluoride residue. Catalytic and endothermic performances were also investigated in supercritical cracking of n-decane. Good performances with obviously enhanced n-decane conversion and heat sink, and decreased coke deposition were obtained via appropriate fluoride modification.
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