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EFFECT OF SILVER AND COPPER OXIDES DOPING ON V2O5-WO3-TiO2 CATALYST FOR LOW-TEMPERATURE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDE BY AMMONIA |
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| Title | EFFECT OF SILVER AND COPPER OXIDES DOPING ON V2O5-WO3-TiO2 CATALYST FOR LOW-TEMPERATURE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDE BY AMMONIA |
| Creator | Natthakorn Jirathanasin |
| Contributor | Akawat Sirisuk |
| Publisher | Chulalongkorn University |
| Publication Year | 2557 |
| Keyword | Metal catalysts, Metallic oxides, Titanium dioxide, Reduction (Chemistry), ตัวเร่งปฏิกิริยาโลหะ, โลหะออกไซด์, ไทเทเนียมไดออกไซด์, รีดักชัน (เคมี) |
| Abstract | This research investigated effect of silver and copper oxides doping on V2O5-WO3/TiO2 catalysts, prepared by impregnation method, for selective catalytic reduction of NOX by ammonia at low temperature. The amounts of Ag2O and Cu2O were varied in ranged of 2%wt to 6%wt, while the amounts of V2O5 and WO3 in the catalysts were fixed at 3%wt. and 7%wt., respectively. TiO2 support was prepared by sol-gel method. All studied catalysts were characterized by diverse techniques such as N2-physisorption, ICP-OES, XRD and NH3-TPD. The catalytic activity testing of NH3-SCR was measured by gas chromatography. Reaction temperature was varied from 120 to 400°C. The addition of silver oxide influenced decreasing performance of the catalyst. In contrast, the addition of copper oxide enhanced the catalytic activity, especially, the copper oxide containing in 2 and 6 %wt. catalyst were observed. From the results, explicit trends in two different temperature regions was occurred in term of copper oxide loading. With 2%wt.Cu2O loading, catalytic activity increased at high temperature, while catalytic activity of 6%wt.Cu2O loading enhanced at low temperature. |
| URL Website | cuir.car.chula.ac.th |
