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A kinetic model has been established for the transformation of bioethanol (aqueous ethanol) into hydrocarbons in the 400–500°C range required for obtaining a high yield of propylene and butenes. The model considers the deactivation by coke of a catalyst prepared with HZSM-5 zeolite doped with 1wt% Ni. This catalyst is hydrothermally stable and allows operating in reaction-regeneration cycles. The...
The hydrothermal stability of catalysts prepared from HZSM-5 zeolites doped with Ni (by impregnation) has been studied in the transformation of bioethanol into hydrocarbons, in order to remove the main barrier for the use of HZSM-5 zeolite catalysts in this process, which is the irreversible deactivation by dealumination of the zeolite above 400°C with water in the reaction medium. The main effect...
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