Structural characterization and catalytic activities of titania supported iron (III) oxide catalysts: Effect of Li+ impregnation |
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| Affiliation: | 1. Department of Chemistry, Faculty of Science, King Faisal University, Al-Hofuf 31982, Saudi Arabia;2. Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt;1. School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shinlim-dong, Kwanak-ku, Seoul 151-744, South Korea;2. Hanwha Chemical Corp., Daejeon 305-804, South Korea;3. Department of Chemical and Biomolecular Engineering, Sogang University, Seoul 121-742, South Korea;1. MCMA Group, Inorganic Chemistry Department, University of Alicante, Spain;2. Surface Chemistry and Catalysis Group, Materials and Chemical Engineering, School of Engineering, University of Aberdeen, Scotland, UK;1. School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, Jiangsu, PR China;2. School of Public Health, Nanjing Medical University, Nanjing, 211166, PR China;3. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, Jiangsu, PR China;4. Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore, 637616, Singapore;1. International Islamic University, H-10, Islamabad, Pakistan;2. Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan |
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| Abstract: | Pure Fe2O3/TiO2 catalysts (1–35 wt.% Fe2O3) and Li-impregnated Fe2O3/TiO2 catalysts (1–10 wt.% Li2O) were prepared. The structural characteristics of pre-calcined samples were examined by using X-ray diffraction (XRD), thermogravimetric analysis (TGA) and ESR techniques. The surface acidity was measured by the adsorption of n-butylamine in non-aqueous media. The catalytic conversion of 2-propanol at 320–360 °C using the microcatalytic pulse technique was studied.XRD of 650 °C-calcination products showed the existence of pure oxide phases as well as other spinels depending on the chemical composition. ESR spectra indicated the existence of Fe(III) in α-Fe2O3 phase and in spinel phase. The chemical composition, surface acidity of the catalyst and reaction temperature affect the catalytic conversion of 2-propanol. |
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