Dry Reforming of Methane at High Pressure in a Fixed-Bed Reactor with Axial Temperature Profile Determination

作者：Tillmann Lukas; Schulwitz Jonas; van Veen Andre; Muhler Martin^*

来源：Catalysis Letters, 2018, 148(8): 2256-2262.

DOI：10.1007/s10562-018-2453-x

• Methane
• Carbon dioxide
• Dry reforming
• High pressure
• Axial temperature profile
• Nickel
• Spinel

A continuously operated flow setup with fixed-bed reactor and online gas analysis enabled kinetic investigations of catalysts for the carbon dioxide reforming of methane under industrially relevant conditions at temperatures up to 1000 A degrees C and at pressures up to 20 bar. A coaxial reactor design consisting of an inner- and an outer highly alloyed steel tube allowed obtaining axial temperature profiles by means of a moveable thermocouple. A NiAl2O4-based catalyst was tested at 820 A degrees C and pressures of 1, 10 or 20 bar and compared to a conventional Ni catalyst used for steam reforming of methane. A significant cold spot was detected even when using only 10 mg of catalysts diluted in 1 g of silicon carbide. The specifically designed NiAl2O4/Al2O3 dry reforming catalyst with a high dispersion of the active Ni-0 phase was found to be far superior to the conventional steam reforming catalyst.
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• 出版日期2018-8