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http://nopr.niscair.res.in/handle/123456789/31676| Title: | FeOx-VOx-WOx-MnOx-CeOx/TiO2 as a catalyst for selective catalytic reduction of NOx with NH3 and the role of iron |
| Authors: | Yu, Su Guojun, Dong Yuan, Zhao Yufeng, Zhang Yajie, Wang |
| Keywords: | Catalysts;Oxides;Nitrogen oxides;Reduction;Iron;Vanadium;Tungsten;Manganese;Cerium;Titanium |
| Issue Date: | 11-Jun-2015 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The preparation of FeOx-VOx-WOx-MnOx-CeOx/TiO2 catalyst by the ultrasound-substep-wet impregnation method for removing NOx from diesel engine exhausts has been demonstrated along with the excellent low-temperature selective catalytic reduction activity over a broad temperature window of 150–300 °C. The specific surface area, catalyst structure, composition and SCR reactivity tests of NO with NH3 at low temperatures have been investigated by nitrogen adsorption, X-ray diffraction, X-ray photoelectron spectroscopy, H2 temperature programmed reduction, NH3 temperature programmed desorption and in situ DRIFTS measurements. The results show that the excellent activity is due to the well-dispersed active components, the moderate ratio of V4+/V5+ and (Mn2++Mn3+)/Mn4+, the excellent redox property and the abundant acid sites. Iron plays the important role of inhibiting the agglomeration of metal oxide during the catalyst sintering and converting V and Mn to their higher oxidation states. |
| Page(s): | 744-751 |
| URI: | http://hdl.handle.net/123456789/31676 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.54A(06) [June 2015] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 54A(6) 744-751_Suppl Data.pdf | Supplementary Data | 41.58 kB | Adobe PDF | View/Open |
| IJCA 54A(6) 744-751.pdf | Main article | 286.08 kB | Adobe PDF | View/Open |
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