Adsorption of NO and NO2 on ceria-zirconia of composition Ce0.69Zr0.31O2:: A DRIFTS study

被引：51
作者：
Azambre, B. [1 ]
Zenboury, L. [1 ]
Delacroix, F. [2 ]
Weber, J. V. [1 ]
机构：
[1] Univ Paul Verlaine Metz, LCME, F-57500 St Avold, France
[2] ADEME, F-49004 Angers, France
来源：
CATALYSIS TODAY | 2008年 / 137卷 / 2-4期
关键词：
ceria-zirconia; CexZr1-xO2; adsorption; NOx; DRIFTS; nitrates;
D O I：
10.1016/j.cattod.2007.09.003
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this study, the nature of surface intermediates generated by adsorption of NO and NO2 on a commercial ceria-zirconia powder of composition Ce0.69Zr0.31O2 was investigated using Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS). The conditions of occurrence of the main adsorbed species, i.e. nitrites and nitrates, are studied semi-quantitatively as a function of catalyst pre-treatment and/or type of adsorbed NO, molecule. On the partially reduced ceria-zirconia, the primary role of NOx is to re-oxidize the surface via adsorption/decomposition on reduced sites. By contrast, the formation of nitrites and nitrates readily occurs on oxidized surfaces, the latter kind of species being strongly promoted in the case of NO2 adsorption only. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：278 / 282
页数：5
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共 16 条
  • [1] Correlation between the surface properties and deNOx activity of ceria-zirconia catalysts
    Adamowska, Malgorzata
    Muller, Sebastien
    Da Costa, Patrick
    Krzton, Andrzej
    Burg, Philippe
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2007, 74 (3-4) : 278 - 289
  • [2] Interaction of NO and NO2 with the surface of CexZr1-xO2 solid solutions -: Influence of the phase composition
    Adamski, Andrzej
    Tabor, Edyta
    Gil, Barbara
    Sojka, Zbigniew
    [J]. CATALYSIS TODAY, 2007, 119 (1-4) : 114 - 119
  • [3] Oxide surfaces as environmental interfaces
    Al-Abadleh, HA
    Grassian, VH
    [J]. SURFACE SCIENCE REPORTS, 2003, 52 (3-4) : 63 - 161
  • [4] Insights into the redox properties of ceria-based oxides and their implications in catalysis
    Aneggi, E
    Boaro, M
    de Leitenburg, C
    Dolcetti, G
    Trovarelli, A
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 408 : 1096 - 1102
  • [5] IR study of polycrystalline ceria properties in oxidised and reduced states
    Binet, C
    Daturi, M
    Lavalley, JC
    [J]. CATALYSIS TODAY, 1999, 50 (02) : 207 - 225
  • [6] Surface and structural characterization of CexZr1-xO2 CEZIRENCAT mixed oxides as potential three-way catalyst promoters
    Colón, G
    Pijolat, M
    Valdivieso, F
    Vidal, H
    Kaspar, J
    Finocchio, E
    Daturi, M
    Binet, C
    Lavalley, JC
    Baker, RT
    Bernal, S
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1998, 94 (24): : 3717 - 3726
  • [7] Characterization of oxide surfaces and zeolites by carbon monoxide as an IR probe molecule
    Hadjiivanov, KI
    Vayssilov, GN
    [J]. ADVANCES IN CATALYSIS, VOL 47, 2002, 47 : 307 - 511
  • [8] Use of CeO2-based oxides in the three-way catalysis
    Kaspar, J
    Fornasiero, P
    Graziani, M
    [J]. CATALYSIS TODAY, 1999, 50 (02) : 285 - 298
  • [9] Effect of preparation method and redox treatment on the reducibility and structure of supported ceria-zirconia mixed oxide
    Kozlov, AI
    Kim, DH
    Yezerets, A
    Andersen, P
    Kung, HH
    Kung, MC
    [J]. JOURNAL OF CATALYSIS, 2002, 209 (02) : 417 - 426
  • [10] Electronic and chemical properties of Ce0.8Zr0.2O2(111) surfaces:: Photoemission, XANES, density-functional, and NO2 adsorption studies
    Liu, G
    Rodriguez, JA
    Hrbek, J
    Dvorak, J
    Peden, CHF
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (32) : 7762 - 7770
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