Catalytic Activity of CuO@SiO2 Nano-Composites for NOx Reduction to Environmental Harmless Species

Seyed Hossein Tohidi¹ Sanaz Gholamzadeh² Abdoljavad Novinrooz³

Abstract :
The co-environmental 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 was determined to be 11.7. Also, the necessary amounts of tri-hydrated copper nitrate and penta-hydrated copper sulfate were added to the solution in such a manner that the concentration of the copper oxide in final solution reach to 10-12 wt %. 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 gas phase. The results were presented the systematic reactivity study of NO reduction by NH3 on dispersed copper oxide nano-composites over silica supports, in order to determine the ability of these materials to conversion into environmental harmless species at different temperatures.

Keywords : copper oxide catalytic activity nano composites no reduction gas phase

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زبان مقاله : انگلیسی
محور مقاله : تکنولوژی
محل انتشار : دومین کنگره بین المللی علوم و مهندسی - پاریس
آدرس وب سایت کنفرانس : parisconf.com
کد IOI مقاله : XCAZ-EHZAZ
لینک مستقیم مقاله : https://isnac.ir/XCAZ-EHZAZ
نمایش چکیده فارسی : https://isnac.ir/SA/XCAZ-EHZAZ

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1. Catalytic Activity of CuO@SiO2 Nano-Composites for NOx Reduction to Environmental Harmless Species
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