Catalyst deactivation in toluene steam dealkylation |
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Authors: | D Duprez P Pereira J Barbier and R Maurel |
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Institution: | (1) Laboratoire de Catalyse Organique (Chimie IV), Faculté des Sciences, 40, Avenue du Recteur Pineau, 86022 Poitiers-Cedex, France |
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Abstract: | Two deactivation factors of Rh/ -Al2O3 catalysts in toluene steam dealkylation are examined: deactivation during working and sulfur poisoning. Onstream deactivation is only due to coke deposit. Specific activity per free exposed fraction of the metal is constant. Sulfur is a strong non-selective poison which may hinder coke formation.
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