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- Title
Selective Catalytic Reduction of NO by NH3 Using a Combination of Non-Thermal Plasma and Mn-Cu/ZSM5 Catalyst.
- Authors
Zhu, Tao; Zhang, Xing; Niu, Wenfeng; Liu, Yatao; Yuan, Bo; Li, Zhenguo; Liu, Haibing
- 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.
- Subjects
NON-thermal plasmas; CATALYTIC reduction; CATALYSTS; DIESEL motor exhaust gas; EQUILIBRIUM reactions; ENERGY density
- Publication
Catalysts (2073-4344), 2020, Vol 10, Issue 9, p1044
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal10091044