IR investigation of the interaction of deuterium with Ce0.6Zr0.4O2 and Cl-doped Ce0.6Zr0.4O2

被引：14

作者：

Gennari, F. C.

Montini, T.

Hickey, N.

Fornasiero, P.

Graziani, M.

机构：

[1] INSTM, Trieste Res Unit, Dept Chem, I-34127 Trieste, Italy

[2] Ctr Excellence Nanostruct Mat, I-34127 Trieste, Italy

来源：

APPLIED SURFACE SCIENCE | 2006年 / 252卷 / 24期

关键词：

ceria-zirconia-based materials; ceria reduction; heterogeneous catalyst; hydrogen activation; deuterium scrambling;

D O I：

10.1016/j.apsusc.2005.11.062

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：

(T)he interaction of deuterium with Ce0.6Zr0.40, synthesised by a co-precipitation technique, is discussed on the basis of the sample's bulk and surface composition and the presence of trace amounts of silicon. Redox cycling resulted in surface cerium enrichment, which, however, only moderately affected the interaction of the material with D,. Addition of a trace amount of chloride ion to the oxide surface promoted both HID scrambling and vacancy creation. Chloride ion was also found to prevent the surface cerium enrichment induced by redox cycling, (c) 2005 Elsevier B.V. All rights reserved.

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页码：8456 / 8465

页数：10

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