Catalytic decomposition of N2O over Cu-ZSM-11 catalysts

被引：37

作者：

Xie, Pengfei ^{[1
]}

Ma, Zhen ^{[2
]}

Zhou, Haibo ^{[1
]}

Huang, Chengyun ^{[1
]}

Yue, Yinghong ^{[1
]}

Shen, Wei ^{[1
]}

Xu, Hualong ^{[1
]}

Hua, Weiming ^{[1
]}

Gao, Zi ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

[2] Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200433, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2014年 / 191卷

基金：

中国国家自然科学基金;

关键词：

Cu-ZSM-11; Cu-ZSM-5; N2O decomposition; Reducibility; Pore architecture; EXCHANGED ZSM-5 ZEOLITES; DIRECT NO DECOMPOSITION; NITRIC-ACID PLANTS; NITROUS-OXIDE; CO ADSORPTION; ACTIVE-SITES; MIXED OXIDES; REDUCTION; GASES; STATE;

D O I：

10.1016/j.micromeso.2014.02.044

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The catalytic decomposition of N2O was investigated over a series of Cu-ZSM-11 catalysts with different Si/Al ratios. The physicochemical properties of the catalysts were characterized by XRD, N-2 adsorption, SEM, Al-27 MAS NMR, DRIFTS, XPS, and H-2-TPR. These catalysts were found to be effective for N2O decomposition. The catalytic activity in terms of conversion decreases when the Si/Al ratio increases, due to the decreased amount of active Cu+ species and the weakened reducibility of active sites. A comparison of Cu-ZSM-11 and Cu-ZSM-5 with the same Si/Al ratio demonstrates that Cu-ZSM-11 is apparently more active than Cu-ZSM-5, due to the enhanced reducibility of active Cu+ species and better accessibility of active sites in Cu-ZSM-11. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：112 / 117

页数：6

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