Investigation of Low-Temperature Selective Catalytic Reduction of NOx with Ammonia over Mn-Modified Fe2O3/AC Catalysts
| Autor: | Zhu Baozhong, Jiaxin Li, Chen Jiuyu, Zicheng Zhu, Sun Yunlan, Shoulai Yin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Chemistry
Selective catalytic reduction 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Dispersion (geology) 01 natural sciences 0104 chemical sciences Amorphous solid Catalysis NO conversion Ammonia chemistry.chemical_compound Volume (thermodynamics) medicine manganese oxide 0210 nano-technology NH3-SCR NOx Nuclear chemistry Activated carbon medicine.drug Fe2O3/AC |
| Zdroj: | Journal of the Brazilian Chemical Society, Volume: 29, Issue: 1, Pages: 79-87, Published: JAN 2018 Journal of the Brazilian Chemical Society v.29 n.1 2018 Journal of the Brazilian Chemical Society Sociedade Brasileira de Química (SBQ) instacron:SBQ |
| Popis: | A series of iron-based catalysts supported on activated carbon (AC) and manganese-modified Fe2O3/AC catalysts with various Fe:Mn ratios were prepared for selective catalytic reduction (SCR) of NO by ammonia at low temperature. It was found that the addition of a small amount of MnOx into the Fe2O3/AC catalyst contributed to an improvement of the NO conversion. NO conversions of approximately 100% were obtained for the 10FexMn/AC (x = 1, 3, 5) catalysts at 180-240 ºC. The characterization results indicate that the addition of a certain amount of MnOx into the 10Fe/AC catalyst increased the dispersion of the amorphous state, increased the ratios of Fe3+/(Fe3+ + Fe2+) and Mn4+/Mn3+, and improved the surface area and pore volume. |
| Databáze: | OpenAIRE |
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