کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1696063 | 1519117 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Nano-size MZnAl (M = Cu, Co, Ni) metal oxides obtained by combining hydrothermal synthesis with urea homogeneous precipitation procedures Nano-size MZnAl (M = Cu, Co, Ni) metal oxides obtained by combining hydrothermal synthesis with urea homogeneous precipitation procedures](/preview/png/1696063.png)
The well-crystallized MZnAl (M = Cu, Co, Ni) layered-double hydroxides (LDHs) were synthesized by combining hydrothermal synthesis with urea homogeneous processes. The LDH precursors were calcined at 450 °C to obtain the nanoscale mixed metal oxides. Characterization techniques including XRD, TG–DTG, TPR, N2 adsorption/desorption, HRTEM and SEM were carried out to investigate the LDH precursors, thermal decomposition behavior and reducibility, porosity and morphology of the calcined samples. For the LDHs containing Cu, the thermal decomposition process became more complex because of its Jahn–Teller effect, and the phases of the calcined samples were different as a result of preparation conditions. Hydrothermal synthesis led to easy generation of the spinel phase at lower thermal treatment temperature (450 °C). Further, the reducibility and texture properties were influenced.
Journal: Applied Clay Science - Volume 48, Issues 1–2, March 2010, Pages 203–207