Low temperature selective catalytic reduction of NOx by ammonia over H-ZSM-5:: an IR study

被引：46

作者：

Sanchez-Escribano, V

Montanari, T

Busca, G ^{[1
]}

机构：

[1] Univ Genoa, Dipartimento Ingn Chim & Proc, I-16129 Genoa, Italy

[2] Univ Salamanca, Dept Quim Inorgan, E-37008 Salamanca, Spain

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2005年 / 58卷 / 1-2期

关键词：

catalytic reduction of NOx; IR study; H-ZSM-5; zeolite; low temperature ammonia SCR; SCR; nitrogen oxides;

D O I：

10.1016/j.apcatb.2004.11.015

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：

The IR study of the interaction of NO2 with ammonia-covered H-ZSM-5 zeolite shows a very fast reaction at room temperature between NO2 and adsorbed ammonium ions. An adsorbed NO2 species is also formed. In the presence of NO + NO2 mixture ammonium ions are completely rapidly decomposed at 300-373 K. These data suggest some speculations on the mechanism of the reduction of NOx by ammonia on H-ZSM-5 catalysts. (c) 2004 Elsevier B.V. All rights reserved.

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页码：19 / 23

页数：5

相关论文

共 23 条

[1] Density functional theory studies of mechanistic aspects of the SCR reaction on vanadium oxide catalysts [J].

Anstrom, M ;

Topsoe, NY ;

Dumesic, JA .

JOURNAL OF CATALYSIS, 2003, 213 (02) :115-125

[2] Chemical and mechanistic aspects of the selective catalytic reduction of NOx by ammonia over oxide catalysts:: A review [J].

Busca, G ;

Lietti, L ;

Ramis, G ;

Berti, F .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1998, 18 (1-2) :1-36

[3]

BUSCA G, 2002, INQUINAMENTO, V34, P40

[4] Identification of neutral and charged NxOy surface species by IR spectroscopy [J].

Hadjiivanov, KI .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2000, 42 (1-2) :71-144

[5] Reaction mechanism of the selective catalytic reduction of NO with NH3 and O2 to N2 and H2O [J].

Jug, K ;

Homann, T ;

Bredow, T .

JOURNAL OF PHYSICAL CHEMISTRY A, 2004, 108 (15) :2966-2971

[6] Enhanced reoxidation of vanadia by NO2 in the fast SCR reaction [J].

Koebel, M ;

Madia, G ;

Raimondi, F ;

Wokaun, A .

JOURNAL OF CATALYSIS, 2002, 209 (01) :159-165

[7] An FT-IR study of the adsorption and oxidation of N-containing compounds over Fe2O3-TiO2SCR catalysts [J].

Larrubia, MA ;

Ramis, C ;

Busca, G .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 30 (1-2) :101-110

[8] Catalytic removal of NO [J].

Pârvulescu, VI ;

Grange, P ;

Delmon, B .

CATALYSIS TODAY, 1998, 46 (04) :233-316

[9] TiO2-supported metal oxide catalysts for low-temperature selective catalytic reduction of NO with NH3I.: Evaluation and characterization of first row transition metals [J].

Peña, DA ;

Uphade, BS ;

Smirniotis, PG .

JOURNAL OF CATALYSIS, 2004, 221 (02) :421-431

[10] Adsorption, activation, and oxidation of ammonia over SCR catalysts [J].

Ramis, G ;

Yi, L ;

Busca, G ;

Turco, M ;

Kotur, E ;

Willey, RJ .

JOURNAL OF CATALYSIS, 1995, 157 (02) :523-535