Improvement of Low-Temperature Activity of FeBeta Monolith Catalyst in NH3-SCR of NOx

被引：13
|
作者：
Mytareva, Alina I. [1 ]
Bokarev, Dmitriy A. [1 ]
Krivoruchenko, Dmitriy S. [1 ]
Baeva, Galina N. [1 ]
Belyankin, Alexey Yu. [1 ]
Stakheev, Alexander Yu. [1 ]
机构：
[1] Russian Acad Sci, ND Zelinsky Inst Organ Chem, Leninsky Pr 47, Moscow 119991, Russia
来源：
TOPICS IN CATALYSIS | 2019年 / 62卷 / 1-4期
关键词：
Low-temperature NH3-SCR; NH3; oxidation; Honeycomb cordierite; Monolithic catalyst; FeBeta; Mn-Ce; HYBRID CATALYSTS; REDUCTION; PERFORMANCE; MECHANISM; SYSTEMS; OXIDES; NH3;
D O I：
10.1007/s11244-018-1094-z
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
FeBeta||Mn-Ce/FeBeta catalyst was prepared by coating cordierite monolith with FeBeta zeolite followed by an impregnation of its downstream part by Mn-Ce solution. The resulting dual-zone catalyst demonstrates improved catalytic performance in the selective catalytic reduction of NOx by NH3 (NH3-SCR) as compared to the parent Fe-Beta. The catalyst exhibits 80-90% NOx conversion and 100% selectivity to N-2 within wide temperature ranges: 180-500 degrees C (at GHSV=18,000h(-1)) and 260-500 degrees C (at GHSV=54,000h(-1)). Moreover, the dual-zone catalyst provides favorable NH3-slip removal efficiency even at NH3/NO=1.60.
引用
收藏
页码：86 / 92
页数：7
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