title: Preparation of Ag-M (M: Fe, Co and Mn)-ZSM-5 bimetal catalysts with high performance for catalytic oxidation of ethyl acetate.
abstract: The catalytic combustion of ethyl acetate has been investigated in a series of mono-metal silver and bimetal Ag-M (M: Fe, Co and Mn)-modified HZSM-5 zeolites. The objective was to find a catalyst with high superior activity, selectivity towards deep oxidation product and stability. The catalyst activity was measured under excess oxygen condition in a fixed bed reactor operated at gas hourly space velocity (GHSV) = 30000 h(-1), reaction temperature between 150 and 450 degrees C and ethyl acetate inlet concentration of 1000 ppm. Both Fe-Ag-ZSM-5 and Co-Ag-ZSM-5 catalysts exhibited high activity in the oxidation of ethyl acetate. The sequences of catalytic activity and catalytic stability were as follows: Fe-Ag-ZSM-5 > Co-Ag-ZSM-5 > Mn-Ag-ZSM-5 > Ag-ZSM-5 > HZSM-5. Total conversion of ethyl acetate was achieved at above 250 degrees C. The catalysts were characterized by inductively coupled plasma atomic emission spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy.
authors.affiliation: Petroleum Research Technology Laboratory, Department of Applied Chemistry and Chemical Engineering, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Jodaei
authors.forename: D
authors.initials: D
authors.lastname: Salari
authors.forename: A
authors.initials: A
authors.lastname: Niaei
authors.forename: M
authors.initials: M
authors.lastname: Khatamian
authors.forename: N
authors.initials: N
authors.lastname: Caylak
mesh_terms: D000085:Acetates / Q000737:chemistry*; D000393:Air Pollutants / Q000737:chemistry*; D002384:Catalysis; D002849:Chromatography, Gas; D003035:Cobalt / Q000737:chemistry; D007501:Iron / Q000737:chemistry; D008345:Manganese / Q000737:chemistry; D019216:Metals, Heavy / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D010084:Oxidation-Reduction; D012834:Silver / Q000737:chemistry*; D013499:Surface Properties; D014961:X-Ray Diffraction; D017641:Zeolites / Q000737:chemistry*
chemical_list: D000085:Acetates; D000393:Air Pollutants; D019216:Metals, Heavy; D017641:Zeolites; D003035:Cobalt; D012834:Silver; D008345:Manganese; C007650:ethyl acetate; D007501:Iron