Synthesis,characterization, and optimization of α‐Fe2O3/silica nanocomposites using homogenous precipitation method |
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| Authors: | Faeze Tari Marzieh Shekarriz Saeed Zarrinpashne Ahmad Ruzbehani |
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| Affiliation: | 1. Chemical, Polymeric and Petrochemical Technology Research Division, Faculty of Research and Development in Downstream Petroleum Industry, Research Institute of Petroleum Industry (RIPI), Tehran, Iran;2. Gas Technology Research Division, Faculty of Research and Development in Downstream Petroleum Industry, Research Institute of Petroleum Industry (RIPI), Tehran, Iran |
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| Abstract: | The purpose of this study was to systematically synthesize and characterize the high surface area 10 wt% nanocomposites of α‐Fe2O3 (hematite)/silica using a simple and economically effective homogenous precipitation (HP) route via Response Surface Method combined with Central Composite Design (CCD). Accordingly, the RSM‐CCD approach including 20 experiments was designed to investigate the effects of three factors including concentration of iron chloride solution, pH and calcinations temperature on the final surface area of α‐Fe2O3/silica nanocomposites. The optimum surface area was 373 m2/g at the condition including iron chloride concentration of 0.018 mol/L, pH=8.95, and calcination temperature of 573°C. |
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| Keywords: | hematite nanocomposites precipitates silica |
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