Disclosing the enhanced NH3-SCR-DeNOx activity of Cu-containing zeolite Y prepared with 15-Crown-5

被引：2
|
作者：
Jablonska, Magdalena [1 ]
Suharbiansah, Rujito S. R. [1 ]
Zhang, Ningqiang [2 ]
Shimizu, Ken-ichi [2 ]
Lukman, Muhammad Fernadi [3 ]
Bertmer, Marko [3 ]
Lei, Huarong [4 ]
Poppl, Andreas [3 ]
Simon, Ulrich [4 ]
Glaser, Roger
机构：
[1] Univ Leipzig, Inst Chem Technol, Linne str 3, D-04103 Leipzig, Germany
[2] Hokkaido Univ, Inst Catalysis, N21 W10, Sapporo 0010021, Japan
[3] Univ Leipzig, Felix Bloch Inst Solid State Phys, Linnestr 5, D-04103 Leipzig, Germany
[4] Rhein Westfal TH Aachen, Inst Inorgan Chem, Landoltweg 1, D-52074 Aachen, Germany
来源：
CATALYSIS TODAY | 2024年 / 432卷
关键词：
Zeolite Y; Copper species; NH3-SCR-DeNOx; Reaction mechanism; SELECTIVE CATALYTIC-REDUCTION; ADSORPTION; OXIDATION; SITES; NOX;
D O I：
10.1016/j.cattod.2024.114611
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The phase-pure zeolite Y with a high n(Si)/n(Al) ratio is obtained with the cyclic polyether 15-Crown-5 as a structure-directing agent. In copper-exchanged for this new zeolite outperformed other Cu-containing zeolite Y counterparts during NH3-SCR-DeNOx with more than 80% NO conversion and more than 85% N2 selectivity in the temperature range of 100 - 500 degrees C. The presence of Cu+ species located in sodalite cages with elevated redox cyclability guarantees high activity and N2 selectivity up to 400 degrees C over CuY-Crown. Above 400 degrees C, a high activity and N2 selectivity are related to the accessibility of chemisorbed NH3 to the gaseous NO during the NH3SCR-DeNOx.
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页数：8
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