Modeling of the regeneration of a coked fixed bed catalyst based on kinetic studies of coke burn-off

Titelangaben

Kern, Christoph ; Jess, Andreas:
Modeling of the regeneration of a coked fixed bed catalyst based on kinetic studies of coke burn-off.
In: Studies in Surface Science and Catalysis. Bd. 139 (2001) . - S. 447-454.
ISSN 0167-2991
DOI: https://doi.org/10.1016/S0167-2991(01)80229-9

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Abstract

The coking and regeneration of a reforming catalyst was studied by physical characterization methods (pore volume, tortuosity, porosity, carbon distribution) as well as by kinetic investigations on the reaction rate of coke burn-off. For temperatures of industrial relevance for the Pt/Re-Al2O3 catalyst, i.e. below 550°C (deactivation), the bum-off rate is determined by the interplay of chemical reaction and pore diffusion; limitation by external mass transfer can be excluded. Based on the kinetic parameters, the process of the regeneration of a technical reactor is discussed.