Characterization of modified crystalline iron nickel catalysts by XRD, SEM, TGA, DSC and BET methods
Publish place: 15th Symposium of Crystallography and Mineralogy of Iran
Publish Year: 1386
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
SCMI15_002
تاریخ نمایه سازی: 9 بهمن 1392
Abstract:
Crystalline iron nickel oxides were prepared using co-precipitation procedure and studied for the conversion of synthesis gas to light olefins. In particular, the effect of a range of preparation variables such as [Fe]/[Ni] molar ratios of the precipitation solution, precipitate aging time, were investigated in detail. The results are interpreted in terms of the structure of the active crystalline catalyst and it has been generally concluded that the catalyst containing 40%Fe/60%Ni-on molar basis and aged for 3h the is optimum catalyst. Characterization crystalline catalysts by powder X-ray diffraction, scanning electron microscopy (SEM), BET specific surface area and thermal analysis methods such as TGA and DSC showed that all the molar ratios of and [Fe]/[Ni] and aging time influenced the crystalline structure and morphology.
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Authors
Mostafa Feyzi
Department of Chemistry, Faculty of Sciences, Sistan & Baluchestan University- Zahedan, Iran.
Hamid Reza Bozorgzadeh
۲Research Institute of Petroleum Industry (RIPI) Gas Division, Tehran, Iran
Flora Shayegh
Research Institute of Petroleum Industry (RIPI) Gas Division, Tehran, Iran.