Hydrogen spillover and structural defects in a PdO/zirconia nanophase synthesized through a surfactant-templated route

被引：28

作者：

Chen, L. F.

Wang, J. A. ^{[1
]}

Valenzuela, M. A.

Bokhimi, X.

Acosta, D. R.

Novaro, O.

机构：

[1] ESIQIE IPN, Lab Catalisis & Mat, Inst Politecn Nacl, Unidad PALM,Col Zacatenco, Mexico City 07738, DF, Mexico

[2] Univ Autonoma Metropolitana A, Dept Ciencias Bas, Mexico City 02200, DF, Mexico

[3] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2006年 / 417卷 / 1-2期

关键词：

zirconia; surfactant-templated synthesis; structural defects; hydrogen spillover;

D O I：

10.1016/j.jallcom.2005.08.070

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：

Nanosized zirconia with structural defects was synthesized by using surfactant-templated method. The average crystallite size, phase composition, cationic defect concentration and structural microstrain in the monoclinic phase of zirconia annealed at 800 degrees C were quantitatively determined by the Rietveld refinement. An unusual behaviour of hydrogen reversibly storing into/releasing from the PdO/ZrO2 nanophases was observed, which related to formation/decomposition of a hydride phase beta-PdH0.76 and to hydrogen storage in the cationic defects of zirconia nanophases by means of hydrogen spillover from Pd metals to zirconia support. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：220 / 223

页数：4

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