، صفحه 0-0 (1)

عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)

The xerogel samples were prepared by hydrolysis and condensation of tetraethyl ortho-silicate (TEOS) by the sol-gel method. In this investigation, a new molar ratio of H2O/TEOS=11.7 was determined. Also, the required values of tri-hydrated copper nitrate and penta-hydrated copper sulfate were added to the solution in somehow that the concentration of the copper oxide in final solution reach to 10-12 weight percent. After ambient drying, the xerogel samples were heated at 400, 600, and 800˚C at a slow heating rate (50°C/h). The structural properties were characterized by Transmission Electron Microscopy (TEM), Brunauer, Emmett and Teller theory for specific surface area determination (BET) and Thermal Program Reduction (TPR) methods at different temperatures. Finally, characterization of nano-composites was studied for NH3 selective catalytic reduction (NH3-SCR) of nitrate ions and following it conversion to NOx (X=1) in nuclear effluent.

Copper oxide؛ Catalytic activity؛ Nano-Composites؛ No3- Conversion؛ Nuclear Effluents