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   Experimental and Kinetic Study of Co Oxidation Over Lafe1-Xcuxo3 (X=0, 0.2, 0.4, 0.6) Perovskite-Type Oxides  
   
نویسنده Rashidi Zonouz P. ,Masoumi M.E. ,Niaei A. ,Tarjomannejad A.
منبع Iranian Journal Of Chemical Engineering - 2018 - دوره : 15 - شماره : 2 - صفحه:91 -102
چکیده    In this paper, catalytic oxidation of co over lafe1-xcuxo3 (x= 0, 0.2, 0.4, 0.6) perovskite-type oxides was investigated. the catalysts were synthesized by sol-gel method and characterized by xrd, bet, ft-ir, h2-tpr, and sem methods. the catalytic activity of catalysts was tested in catalytic oxidation of co. xrd patterns confirmed the synthesized perovskites to be single-phase perovskite-type oxides. the synthesized perovskite catalysts show high activity in the range of reaction temperature (50 - 300 ºc). the substitution of cu in b-site of the perovskite catalysts enhanced their catalytic activity for co oxidation. among different synthesized perovskite catalysts, lafe0.6cu0.4o3 has the highest activity: nearly complete elimination of co was achieved at 275 ºc with this catalyst. kinetic studies for co oxidation were performed based on power law and mars-van krevelen mechanisms. according to kinetic calculations, the most probable mechanism is the mkv-d (dissociative adsorption of oxygen) which can predict the experimental data with correlation coefficient of r2 > 0.995.
کلیدواژه Co Oxidation ,Perovskite ,Lafe1-Xcuxo3 ,Kinetic ,Mvk Mechanism
آدرس Islamic Azad University, Tehran North Branch, Faculty Of Engineering, ایران, Islamic Azad University, Tehran North Branch, Faculty Of Engineering, ایران, University Of Tabriz, Department Of Chemical Engineering & Petroleum, ایران, University Of Tabriz, Department Of Chemical Engineering & Petroleum, ایران
پست الکترونیکی ali_tarjoman@yahoo.com
 
     
   
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