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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Energy Technologies and CO2 Management Symposium
Presentation Title E-48: CaO Poisoning on Mn-Ce/AC Catalyst for Selective Catalytic Reduction of NO with NH3 at Low Temperature
Author(s) Zenghui Su, Shan Ren, Jie Yang, Tianshi Zhang, Zelong Cai, Lin Chen, Ming Kong, Qingcai Liu, Jian Yang, Jiangling Li
On-Site Speaker (Planned) Zenghui Su
Abstract Scope A series of Ca-doped Mn-Ce/AC catalyst were prepared by impregnation method and used for selective reduction(SCR) of NO with NH3 at the temperature range of 75-250 oC. SEM, BET, XRD, XPS NH3-TPD and FT-IR was carried out to study the deactivation reasons of CaO poisoned catalysts. Results showed that CaO resulted in a significant decrease of NO conversion efficiency. The doping of CaO resulted in a decrease in the specific surface area and total pore volume of the AC. The loading of CaO would cause a decrease in the concentration of Mn4+ on the surface of the catalyst and the redox capacity of the catalyst. The strong acid sites on the surface of the Ca-Mn-Ce/AC catalyst migrated to the high temperature zone, resulting in a decrease in the ammonia adsorption capacity of the catalyst. All of these would reduce denitrification activity of activated carbon catalysts.
Proceedings Inclusion? Planned:

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