Interaction of NO and NO2 with the surface of CexZr1-xO2 solid solutions -: Influence of the phase composition

被引：30

作者：

Adamski, Andrzej

Tabor, Edyta

Gil, Barbara

Sojka, Zbigniew

机构：

[1] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland

[2] Polish Acad Sci, Inst Catalysis & Surface Chem, PL-30239 Krakow, Poland

[3] Reg Lab Physicochem Anal & Struct Res, PL-30060 Krakow, Poland

来源：

CATALYSIS TODAY | 2007年 / 119卷 / 1-4期

关键词：

CexZr1-xO2; phase composition; NOx adsorption; EPR; RS;

D O I：

10.1016/j.cattod.2006.08.003

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Structural (XRD) and spectroscopic (EPR, IR and Raman) investigations were per-formed to elucidate the influence of CeO2 content on the phase composition and surface chemistry of CexZr1-xO2 solid solutions (x = 0.10-0.85), interacting with NO and NO2 in the absence and presence of oxygen. Strong influence of ceria loading on the adsorption modes of both nitrogen oxides and the nature of the resultant surface species was revealed. Adsorption of NO led to formation of mononitrosyl complexes, dimers and N2O, whereas interaction of NO2 with the ceria-zirconia catalyst resulted in the adsorbate disproportionation or coupling, depending on the sample composition. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：114 / 119

页数：6

共 34 条

[31] Effects of trivalent dopants on the redox properties of Ce0.6Zr0.4O2 mixed oxide [J].