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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Shi, Liyi Huang, Lei Li, Hongrui Cai, Sixiang Zhang, Jianping Fang, Cheng Zhang, Dengsong Zhang, Lei Maitarad, Phornphimon Gao, Ruihua |
| Copyright Year | 2013 |
| Abstract | Nanoflaky MnOx on carbon nanotubes (nf-MnOx@CNTs) was in situ synthesized by a facile chemical bath deposition route for low-temperature selective catalytic reduction (SCR) of NO with NH3. This catalyst was mainly characterized by the techniques of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), N2 adsorption–desorption analysis, X-ray photoelectron spectroscopy (XPS), H2 temperature-programmed reduction (H2-TPR) and NH3 temperature-programmed desorption (NH3-TPD). The SEM, TEM, XRD results and N2 adsorption–desorption analysis indicated that the CNTs were surrounded by nanoflaky MnOx and the obtained catalyst exhibited a large surface area as well. Compared with the MnOx/CNT and MnOx/TiO2 catalysts prepared by an impregnation method, the nf-MnOx@CNTs presented better NH3-SCR activity at low temperature and a more extensive operating temperature window. The XPS results showed that a higher atomic concentration of Mn4+ and more chemisorbed oxygen species existed on the surface of CNTs for nf-MnOx@CNTs. The H2-TPR and NH3-TPD results demonstrated that the nf-MnOx@CNTs possessed stronger reducing ability, more acid sites and stronger acid strength than the other two catalysts. Based on the above mentioned favourable properties, the nf-MnOx@CNT catalyst has an excellent performance in the low-temperature SCR of NO to N2 with NH3. In addition, the nf-MnOx@CNT catalyst also presented favourable stability and H2O resistance. |
| Starting Page | 9199 |
| Ending Page | 9207 |
| Page Count | 9 |
| File Format | HTM / HTML PDF |
| ISSN | 20403364 |
| Volume Number | 5 |
| Issue Number | 19 |
| Journal | Nanoscale |
| DOI | 10.1039/c3nr02631k |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Oxygen Properties of water Chemical bath deposition Photoemission spectroscopy Scanning electron microscope Carbon nanotube X-ray crystallography Ammonia Temperature-programmed reduction Transmission electron microscopy Carboxylic acid Selective catalytic reduction X-ray photoelectron spectroscopy Operating temperature |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology |
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