Experimental and Kinetic Study of CO Oxidation Over LaFe1-xCuxO3 (x=0, 0.2, 0.4, 0.6) Perovskite-Type Oxides
In this paper, catalytic oxidation of CO over the 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 oxi...
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Iranian Association of Chemical Engineering (IAChE)
2018-05-01
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| Series: | Iranian Journal of Chemical Engineering |
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| Online Access: | https://www.ijche.com/article_67304_327261b61d6e199fcc0013efb42a978c.pdf |
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| author | P. Rashidi Zonouz M.E. Masoumi A. Niaei A. Tarjomannejad |
| author_facet | P. Rashidi Zonouz M.E. Masoumi A. Niaei A. Tarjomannejad |
| author_sort | P. Rashidi Zonouz |
| collection | DOAJ |
| description | In this paper, catalytic oxidation of CO over the 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. |
| format | Article |
| id | doaj-art-eaabcecd4d314e789841ff9ee1e6c31b |
| institution | OA Journals |
| issn | 1735-5397 2008-2355 |
| language | English |
| publishDate | 2018-05-01 |
| publisher | Iranian Association of Chemical Engineering (IAChE) |
| record_format | Article |
| series | Iranian Journal of Chemical Engineering |
| spelling | doaj-art-eaabcecd4d314e789841ff9ee1e6c31b2025-08-20T02:18:43ZengIranian Association of Chemical Engineering (IAChE)Iranian Journal of Chemical Engineering1735-53972008-23552018-05-011529110267304Experimental and Kinetic Study of CO Oxidation Over LaFe1-xCuxO3 (x=0, 0.2, 0.4, 0.6) Perovskite-Type OxidesP. Rashidi Zonouz0M.E. Masoumi1A. Niaei2A. Tarjomannejad3Faculty of Engineering, Tehran North Branch, Islamic Azad University, Tehran, IranFaculty of Engineering, Tehran North Branch, Islamic Azad University, Tehran, IranDepartment of chemical Engineering & Petroleum, University of Tabriz, Tabriz, IranDepartment of chemical Engineering & Petroleum, University of Tabriz, Tabriz, IranIn this paper, catalytic oxidation of CO over the 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.https://www.ijche.com/article_67304_327261b61d6e199fcc0013efb42a978c.pdfco oxidationperovskitelafe1-xcuxo3kineticmvk mechanism |
| spellingShingle | P. Rashidi Zonouz M.E. Masoumi A. Niaei A. Tarjomannejad Experimental and Kinetic Study of CO Oxidation Over LaFe1-xCuxO3 (x=0, 0.2, 0.4, 0.6) Perovskite-Type Oxides Iranian Journal of Chemical Engineering co oxidation perovskite lafe1-xcuxo3 kinetic mvk mechanism |
| title | Experimental and Kinetic Study of CO Oxidation Over LaFe1-xCuxO3 (x=0, 0.2, 0.4, 0.6) Perovskite-Type Oxides |
| title_full | Experimental and Kinetic Study of CO Oxidation Over LaFe1-xCuxO3 (x=0, 0.2, 0.4, 0.6) Perovskite-Type Oxides |
| title_fullStr | Experimental and Kinetic Study of CO Oxidation Over LaFe1-xCuxO3 (x=0, 0.2, 0.4, 0.6) Perovskite-Type Oxides |
| title_full_unstemmed | Experimental and Kinetic Study of CO Oxidation Over LaFe1-xCuxO3 (x=0, 0.2, 0.4, 0.6) Perovskite-Type Oxides |
| title_short | Experimental and Kinetic Study of CO Oxidation Over LaFe1-xCuxO3 (x=0, 0.2, 0.4, 0.6) Perovskite-Type Oxides |
| title_sort | experimental and kinetic study of co oxidation over lafe1 xcuxo3 x 0 0 2 0 4 0 6 perovskite type oxides |
| topic | co oxidation perovskite lafe1-xcuxo3 kinetic mvk mechanism |
| url | https://www.ijche.com/article_67304_327261b61d6e199fcc0013efb42a978c.pdf |
| work_keys_str_mv | AT prashidizonouz experimentalandkineticstudyofcooxidationoverlafe1xcuxo3x0020406perovskitetypeoxides AT memasoumi experimentalandkineticstudyofcooxidationoverlafe1xcuxo3x0020406perovskitetypeoxides AT aniaei experimentalandkineticstudyofcooxidationoverlafe1xcuxo3x0020406perovskitetypeoxides AT atarjomannejad experimentalandkineticstudyofcooxidationoverlafe1xcuxo3x0020406perovskitetypeoxides |