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Global Journal of Physical Chemistry. Volume 2, Issue 3 (2011) pp. 255-263
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Research Article
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Physicochemical, structural and catalytic properties of CuO/Cu2(OH)3NO3:(Co:Fe) composites
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Elena V. Ischenkoa, Andrey V. Yatsimirskya, Yuriy V. Maksimovb, Nikolay I. Zakharenkoa, Snezhanna V. Gaydaya, Oleksandr A. Byedaa, Vladyslav V. Lisnyaka
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a Kyiv National Taras Shevchenko University, Kyiv 01601, Ukraine
b Nikolay N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow
119991, Russian Federation
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Abstract |
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The catalysts based on CuO/Cu2(OH)3NO3:(Co:Fe) composites were prepared, characterized using powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy with electron dispersion X-ray microanalysis (SEM-EDX), Mössbauer spectroscopy, Ar desorption technique and applied for CO conversion to CO2. Comparative studies on CO conversion reveal that the composites reached with Cu2(OH)3NO3 phase and containing 20–25 nm sized hematite clusters exhibit markedly improved activity for this reaction. Temperature programmed desorption mass-spectrometry (TPD MS) was used to determine species absorbed over the composites, which are examined after activity tests, and pathways of CO conversion were proposed.
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Keywords |
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Oxides; Inorganic compounds; Electron microscopy; Mössbauer spectroscopy; X-ray diffraction; surface properties
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