Synergistic catalysis effect of Mn-promoted BaAl2O4 catalysts on catalytic performance for soot combustion

被引：26

作者：

Yang, Gaoyang ^{[1
]}

Li, Yingjie ^{[1
]}

Men, Yong ^{[1
]}

机构：

[1] Shanghai Univ Engn Sci, Coll Chem & Chem Engn, Shanghai 201620, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2015年 / 69卷

基金：

中国国家自然科学基金;

关键词：

Soot combustion; Synergistic catalysis; NO; In-situ DRIFTS; Nitrates; LOW-TEMPERATURE; OXIDE CATALYSTS; STORED NOX; OXIDATION; REDUCTION; PT/AL2O3; REMOVAL; STORAGE;

D O I：

10.1016/j.catcom.2015.06.020

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of Mn-promoted BaAl2O4 catalysts were developed for catalytic soot combustion. These catalysts were characterized using XRD, BET, H-2-TPR, O-2-TPD, and in-situ DRIFTS. The results showed that an optimized combustion catalyst should accommodate barium and manganese with proper balance to promote soot combustion. A synergistic mechanism was suggested to explain the synergistic effect of manganese and barium: NO was trapped mainly as nitrites by barium, while the generated nitrites further transformed to nitrates facilitated by manganese, which finally oxidized soot into CO2. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：202 / 206

页数：5

共 25 条

[1] 1D-MnO2, 2D-MnO2 and 3D-MnO2 for low-temperature oxidation of ethanol [J].

Bai, Bingyang ;

Li, Junhua ;

Hao, Jiming .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2015, 164 :241-250

[2] Highly efficient oxidation of soot over RuOx/SiO2 in fluidized bed reactor [J].

Guo, Mingxin ;

Ouyang, Feng ;

Pang, Dandan ;

Qiu, Lu .

CATALYSIS COMMUNICATIONS, 2013, 38 :40-44

[3] Soot combustion activity of NOx-sorbing Cs-MnOx-CeO2 catalysts [J].

Ito, Kazuhiro ;

Kishikawa, Kouji ;

Watajima, Akihisa ;

Ikeue, Keita ;

Machida, Masato .

CATALYSIS COMMUNICATIONS, 2007, 8 (12) :2176-2180

[4] Catalytic combustion of VOCs over a series of manganese oxide catalysts [J].

Kim, Sang Chai ;

Shim, Wang Geun .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2010, 98 (3-4) :180-185

[5] Boosting the catalytic activity of magnetite in soot oxidation by surface alkali promotion [J].

Legutko, Piotr ;

Kaspera, Wojciech ;

Stelmachowski, Pawel ;

Sojka, Zbigniew ;

Kotarba, Andrzej .

CATALYSIS COMMUNICATIONS, 2014, 56 :139-142

[6] Multifunctional hydrotalcite-derived K/MnMgAlO catalysts used for soot combustion, NOx storage and simultaneous soot-NOx removal [J].

Li, Qian ;

Meng, Ming ;

Dai, Fangfang ;

Zha, Yuqing ;

Xie, Yaning ;

Hu, Tiandou ;

Zhang, Jing .

CHEMICAL ENGINEERING JOURNAL, 2012, 184 :106-112

[7] Properties of BaAl2O4 in the simultaneous removal of soot and NOx [J].

Li, Yingjie ;

Lin, He ;

Shangguani, Wenfeng ;

Huang, Zhen .

CHEMICAL ENGINEERING & TECHNOLOGY, 2007, 30 (10) :1426-1433

[8] Soot oxidation and NOx reduction over BaAl2O4 catalyst [J].

Lin, He ;

Li, Yingjie ;

Shangguan, Wenfeng ;

Huang, Zhen .

COMBUSTION AND FLAME, 2009, 156 (11) :2063-2070

[9] The lean NOx traps behavior of (1-5%) BaO/CeO2 mixed with Pt/Al2O3 at low temperature (100-300 °C): The effect of barium dispersion [J].

Lv, Liangfang ;

Wang, Xinquan ;

Shen, Meiqing ;

Zhang, Qingqing ;

Wang, Jun .

CHEMICAL ENGINEERING JOURNAL, 2013, 222 :401-410

[10] MnOx-CeO2 binary oxides for catalytic NOx-sorption at low temperatures.: Selective reduction of sorbed NOx [J].

Machida, M ;

Kurogi, D ;

Kijima, T .

CHEMISTRY OF MATERIALS, 2000, 12 (10) :3165-3170

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