title: Oxidation of ethyl acetate by a high performance nanostructure (Ni, Mn)-Ag/ZSM-5 bimetallic catalysts and development of an artificial neural networks predictive modeling.
abstract: The catalytic oxidation of ethyl acetate in low concentration was investigated over mono-metallic Ag/ZSM5 and bimetallic (Ni, Mn)-Ag/ZSM-5 catalysts. Catalytic studies were carried out in a catalytic fixed bed reactor under atmospheric pressure. The sequence of catalytic activity was as follows: Ni-Ag-ZSM-5 > Mn-Ag-ZSM-5 > Ag-ZSM-5 > H-ZSM-5. The catalysts were characterized by ICP-AES, X-ray diffraction (XRD), low temperature nitrogen adsorption, NH(3)-TPD, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and diffuse reflectance UV-vis spectra (UV-vis). An artificial neural networks (ANN) model was developed to predict the performance of catalytic oxidation process over bimetallic Ni-Ag/ZSM-5 catalyst based on experimental data. For this purpose the standard feed forward back propagation algorithm was employed to train the model by using laboratory experimental data. A good agreement was resulted between experimental results and those obtained by ANN. Following order for variables effects on conversion yield of ethyl acetate was predicted by ANN model: reaction temperature (32.99%) > Ag loading (27.38%) > initial ethyl acetate concentration (23.58%) > Ni loading (16.05%).
authors.affiliation: Petroleum Research Technology Laboratory, Department of Applied Chemistry & Chemical Engineering, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
authors.forename: Azadeh
authors.initials: A
authors.lastname: Jodaei
authors.forename: Darush
authors.initials: D
authors.lastname: Salari
authors.forename: Ali
authors.initials: A
authors.lastname: Niaei
authors.forename: Masumeh
authors.initials: M
authors.lastname: Khatamian
authors.forename: Seyed Ali
authors.initials: SA
authors.lastname: Hosseini
mesh_terms: D000085:Acetates / Q000737:chemistry*; D002384:Catalysis; D008345:Manganese; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D009532:Nickel; D010084:Oxidation-Reduction; D012834:Silver; D014961:X-Ray Diffraction
chemical_list: D000085:Acetates; D012834:Silver; D008345:Manganese; C007650:ethyl acetate; D009532:Nickel