شماره ركورد كنفرانس :
5048
عنوان مقاله :
Investigation of deactivation of Cr- ZSM-5 zeolite during catalytic oxidation of ethyl Acetate in a fixed bed reactor
Author/Authors :
Aligoli ،Niaei Department of Applied Chemistry and Chemical Engineering - Faculty of Chemistry - University of Tabriz, Tabriz, Iran , Darush ،salari Department of Applied Chemistry and Chemical Engineering - Faculty of Chemistry - University of Tabriz, Tabriz, Iran , Azadeh ،jodaei Department of Applied Chemistry and Chemical Engineering - Faculty of Chemistry - University of Tabriz, Tabriz, Iran , Nayimeh ،Nikniaz Department of Applied Chemistry and Chemical Engineering - Faculty of Chemistry - University of Tabriz, Tabriz, Iran
كليدواژه :
Cr-ZSM-5 , regeneration , deactivation , catalytic oxidation
عنوان كنفرانس :
ششمين كنگره بين المللي مهندسي شيمي
چكيده لاتين :
Cr-modified ZSM-5 zeolites (Si/Al = 14) were prepared by adopting the liquid ion-exchange method with nitrate
chrome as Cr precursor and their catalytic performance and deactivation behavior was studied in the oxidation of ethyl
acetate. Furthermore, the catalyst has been regenerated several times and showed good regeneration performance.
During the oxidation process, the catalytic activity decreases, some of the catalyst pores are blocked and the acid
centers are partly covered by coke deposition. The coked versus fresh catalysts have been characterized by XRD, FT-IR
and SEM to reveal that the structure of the Cr-ZSM-5 catalyst was unaffected by coke deposition.
