Decomposition reaction of methylcyclohexane using H-ZSM-5 supported on NiCrAl metal foam

Abstract

The endothermic reaction of the fuel is used as a cooling system for hypersonic aircraft. At this time, the zeolite catalyst is used for an effective endothermic reaction. In this work, the effect of metal foam catalyst on the composition of the product was investigated by using zeolite with a metal foam support as a catalyst for the endothermic reaction. The metal foam support was made with NiCrAl alloy. The characteristics of the zeolite catalyst were confirmed by X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR) analysis and NH3-Temperature programmed desorption (NH3-TPD) analysis. The composition of the product of the endothermic reaction was analyzed by GC-MS. In experiments of H-ZSM-5 catalyst pellet, the conversion of methylcyclohexane (MCH) was about 82%. While, in the case of the H-ZSM-5 catalyst supported with the metal foam, the conversion of MCH was about 93% and the conversion was 11% higher than that of the zeolite catalyst itself. In addition, experimental results with different temperatures showed that MCH conversion and aromatic hydrocarbon increased with increasing temperature. On the other hand, low hydrocarbons increased when increasing from 598 to 633K, but decreased when increasing to 673K.