کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1695398 | 1519110 | 2012 | 6 صفحه PDF | دانلود رایگان |
A series of Zn, Ni and Fe containing hydrotalcite-like compounds with various M2+/M3+ ratios were synthesized by co-precipitation method at pH = 10. The products were characterized by XRD, SEM, TG-DTA, FTIR, CO2-TPD and N2 adsorption/desorption techniques. The results showed that M2+/M3+ ratio affected the formation of hydrotalcite crystal seriously. The precursors with M2+/M3+ mole ratio of 2 and 3 showed pure hydrotalcite phase. After calcination at 250 °C, the derived oxides with larger surface area and more basic sites were obtained. Desulfurization tests showed that the Zn–Ni–Fe hydrotalcite-derived oxide exhibited an excellent activity in low temperature hydrolysis of COS. The optimum M2+/M3+ mole ratio was 3.
The Zn–Ni–Fe hydrotalcite-derived mixed oxides were prepared and characterized. Their catalytic activity for carbonyl sulfide hydrolysis was investigated.Figure optionsDownload as PowerPoint slideHighlights
► Zn–Ni–Fe hydrotalcite-derived oxides were prepared and characterized.
► Influences of M2+/M3+ ratio and calcination temperature were described.
► Zn–Ni–Fe hydrotalcite-derived oxide as catalyst for hydrolysis of COS was studied.
Journal: Applied Clay Science - Volume 56, February 2012, Pages 84–89