سال انتشار: ۱۳۸۶
محل انتشار: پانزدهمین همایش انجمن بلورشناسی و کانی شناسی ایران
تعداد صفحات: ۶
Mostafa Feyzi – Department of Chemistry, Faculty of Sciences, Sistan & Baluchestan University- Zahedan, Iran.
Ali Akbar Mirzaei –
Hamid Reza Bozorgzadeh – 2Research Institute of Petroleum Industry (RIPI) Gas Division, Tehran, Iran
Flora Shayegh – Research Institute of Petroleum Industry (RIPI) Gas Division, Tehran, Iran.
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.