Performance of V2O5/NPTiO2-Al2O3-nanoparticle- and V2O5/NTiO2-Al2O3-nanotube model catalysts in the SCR-NO with NH3

被引：11

作者：

Camposeco, R. ^{[1
,3
]}

Castillo, S. ^{[1
,2
]}

Mejia-Centeno, Isidro ^{[1
]}

机构：

[1] Mexican Inst Petr, Mol Engn Program, Mexico City 07730, DF, Mexico

[2] ESIQIE IPN, Dept Chem Engn, Mexico City 75876, DF, Mexico

[3] UAM A, Dept Chem, Mexico City 55534, DF, Mexico

来源：

CATALYSIS COMMUNICATIONS | 2015年 / 60卷

关键词：

Titania nanoparticles; Titania nanotubes; SCR-NH3-process; Titania acidity; OXIDE CATALYSTS; REDUCTION; REACTIVITY; TITANIA; WATER; SPECTROSCOPY; OXIDATION; BEHAVIOR; ACIDITY; SILICA;

D O I：

10.1016/j.catcom.2014.11.031

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：

In this study, the NO reduction by NH3 over V2O5/NPTiO2-Al2O3 (nanoparticles) and V2O5/NTiO2-Al2O3 (nanotubes) catalysts synthesized by the sol-gel method with 10 and 5 wt.% of Al2O3 and V2O5, respectively, is reported. The V2O5/NPTiO2-Al2O3 and V2O5/NTiO2-Al2O3 catalysts showed remarkable conversion, high acidity, structure stability, N-2 selectivity and a high resistance to deactivation in the presence of 10 vol.% of H2O within the 200 to 500 degrees C temperature interval. The nanostructured catalysts developed in this work are an excellent alternative to improve the SCR-NH3 process, both expanding its operation window and preventing deactivation by H2O at high temperatures. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：114 / 119

页数：6

共 23 条

[1] Pyridine-TiO2 surface interaction as a probe for surface active centers analysis [J].

Bezrodna, T ;

Puchkovska, G ;

Shimanovska, V ;

Chashechnikova, I ;

Khalyavka, T ;

Baran, J .

APPLIED SURFACE SCIENCE, 2003, 214 (1-4) :222-231

[2]

Bosch H., 1988, Catalysis Today, V2, P369, DOI [DOI 10.1016/B978-0-444-98919-2.50005-3, DOI 10.1016/0920-5861(88)80002-6, 10.1016/0920-5861(88)80002-6]

[3] Novel V2O5/NTiO2-Al2O3 nanostructured catalysts for enhanced catalytic activity in NO reduction by NH3 [J].

Camposeco, R. ;

Castillo, S. ;

Mugica, V. ;

Mejia-Centeno, I. ;

Marin, J. .

CATALYSIS COMMUNICATIONS, 2014, 45 :54-58

[4] SCR of NO by NH3 over TiO2-supported V2O5-MoO3 catalysts:: reactivity and redox behavior [J].

Casagrande, L ;

Lietti, L ;

Nova, I ;

Forzatti, P ;

Baiker, A .

APPLIED CATALYSIS B-ENVIRONMENTAL, 1999, 22 (01) :63-77

[5] IR spectroscopy of surface water and hydroxyl species on nanocrystalline TiO2 films [J].

Finnie, KS ;

Cassidy, DJ ;

Bartlett, JR ;

Woolfrey, JL .

LANGMUIR, 2001, 17 (03) :816-820

[6] Environmental catalysis for stationary applications [J].

Forzatti, P .

CATALYSIS TODAY, 2000, 62 (01) :51-65

[7] Preparation and in-situ spectroscopic characterization of molecularly dispersed titanium oxide on silica [J].

Gao, XT ;

Bare, SR ;

Fierro, JLG ;

Banares, MA ;

Wachs, IE .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (29) :5653-5666

[8] Inhibition effect of H2O on V2O5/AC catalyst for catalytic reduction of NO with NH3 at low temperature [J].

Huang, ZG ;

Liu, ZY ;

Zhang, XL ;

Liu, QY .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 63 (3-4) :260-265

[9] Characterization of Hydrothermally Prepared Titanate Nanotube Powders by Ambient and In Situ Raman Spectroscopy [J].

Kim, Sun-Jae ;

Yun, Yeong-Ung ;

Oh, Hyo-Jin ;

Hong, Sung Ho ;

Roberts, Charles A. ;

Routray, Kamalakanta ;

Wachs, Israel E. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2010, 1 (01) :130-135

[10] Steady-state and transient reactivity study of TiO2-Supported V2O5-WO3 de-NOx catalysts: Relevance of the vanadium-tungsten interaction on the catalytic activity [J].

Lietti, L ;

Forzatti, P ;

Bregani, F .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (11) :3884-3892

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