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Selective Catalytic Reduction of NO by NH3 Using a Combination of Non-Thermal Plasma and Mn-Cu/ZSM5 Catalyst. Catalysts 2020. [DOI: 10.3390/catal10091044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Dielectric barrier discharge (DBD) could generate non-thermal plasma (NTP) with the advantage of fast reactivity and high energy under atmosphere pressure and low-temperature. The presented work investigated the selective catalytic reduction (SCR) of nitric oxide (NO) using a combination of NTP and an Mn-Cu/ZSM5 catalyst with ammonia (NH3) as a reductant. The experimental results illustrate that the plasma-assisted SCR process enhances the low-temperature catalytic performance of the Mn-Cu/ZSM5 catalyst significantly, and it exhibits an obvious improvement in the NO removal efficiency. The reaction temperature is maintained at 200 °C in order to simulate the exhaust temperature of diesel engine, and the 10% Mn-8% Cu/ZSM5 catalyst shows the highest NO removal performance with about 93.89% at an energy density of 500 J L−1 and the selectivity to N2 is almost 99%. The voltage, frequency and energy density have a positive correlation to NO removal efficiency, which is positively correlated with the power of NTP system. In contrast, the O2 concentration has a negative correlation to the NO removal, and the NO removal efficiency cannot be improved when the NO removal process reaches reaction equilibrium in the NTP system.
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Si M, Shen B, Zhang H, Liu L, Zhou W, Liu Z, Pan Y, Zhang X. Comparative Study of NO Oxidation under a Low O3/NO Molar Ratio Using 15% Mn/TiO2, 15% Co/TiO2, and 15% Mn–Co(2:1)/TiO2 Catalysts. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b05002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Meng Si
- Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Boxiong Shen
- Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Haohao Zhang
- Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Lijun Liu
- Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Wenjun Zhou
- Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Zhi Liu
- Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Yijun Pan
- Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Xiao Zhang
- Tianjin Key Laboratory of Clean Energy Utilization and Pollutant Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
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