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Binary oxides based on Co–Fe and Ni–Fe were synthesized thermal treatment of layered double hydroxides (LDH) having distinct Ni/Fe and Co/Ni ratios. The solids were characterized through X-ray diffraction (XRD), Raman and Mössbauer spectroscopy, nitrogen adsorption–desorption isotherms, thermoprogrammed reduction (TPR) and thermoprogrammed desorption of CO 2 (TPD-CO 2 ), scanning electron...
CuO/ZnO/Al 2 O 3 catalysts were prepared from calcination of hydrotalcite-like compounds obtained by co-precipitation of Cu, Zn and Al nitrates. The characterization of the hydrotalcite-derived catalyst by XRD showed the formation of CuO and ZnO, with small contribution of spinel phase and diameter of CuO crystallite of about 10nm; TPR analysis showed a higher reduction temperature...
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