effect of ag-doping of nanosized fealo system on its structural, surface and catalytic properties
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2016
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Abstract
The effects of Ag2O-doping on the physicochemical, surface and catalytic properties of FeAlO system with various extents of Fe2O3 loading have been investigated. The dopant concentration was changed between 1.5 and 4.0 mol % Ag2O. Pure and variously doped solids were subjected to heat treatment at 400–800 °C. The techniques employed for characterization of catalysts were TG/DTG, XRD, N2-adsorption at −196 °C and the catalytic decomposition of H2O2 at 25–40 °C. The results obtained revealed that, the investigated catalysts consisted of nanosized γ-Al2O3 phase. The textural properties including SBET, porosity and St were modified by Ag2O-doping. The doping process with Ag-species improves the catalytic activity of FeAlO system. Increasing the precalcination temperature from 400 to 800 °C increases the catalytic activity of 3.5% AgFeAlO with 1.9-fold toward H2O2 decomposition at 30 °C. Furthermore, the maximum increase in the catalytic activity due to doping with 3.5 mol % Ag2O at 30 °C attained about 15.1-fold for the solids calcined at 800 °C.
| Reference Key |
ali2016arabianeffect
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|---|---|
| Authors | ;Laila I. Ali;Sahar A. El-Molla;Nabil H. Amin;Anwer A. Ebrahim;Hala R. Mahmoud |
| Journal | Behavioural brain research |
| Year | 2016 |
| DOI |
10.1016/j.arabjc.2012.01.009
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