Catalyst sintering in fixed-bed reactors: Deactivation rate and thermal history
1992; Wiley; Volume: 38; Issue: 2 Linguagem: Inglês
10.1002/aic.690380209
ISSN1547-5905
AutoresValero Blasco, C. Royo, A. Μοnzόn, Jesús Santamarı́a,
Tópico(s)Catalysis and Hydrodesulfurization Studies
ResumoAbstract An experimental study has been carried out of the in situ thermal degradation of a commercial dehydrogenation catalyst in a fixed‐bed reactor. The activity of catalyst particles sampled at different reactor positions after several reaction‐regeneration cycles has been related to their time‐temperature history, according to the following kinetics: The above equation represents the loss of activity under coke‐free conditions, that is, activity loss due to sintering. The results of the study show that important differences in catalytic activity can be obtained for different positions of a fixed‐bed catalytic reactor after several operation‐regeneration cycles.
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