NO reaction over nanometer scale platinum clusters deposited on γ-alumina:: an XAS study

被引：32

作者：

Schneider, S

Bazin, D

Garin, F

Maire, G

Capelle, M

Meunier, G

Noirot, R

机构：

[1] Univ Paris Sud, LURE, F-91405 Orsay, France

[2] PSA, Ctr Tech Belchamp, F-25420 Voujeaucourt, France

[3] ECPM, LERCSI, UMR 7515, F-67087 Strasbourg, France

来源：

APPLIED CATALYSIS A-GENERAL | 1999年 / 189卷 / 01期

关键词：

sintering; platinum; NO; alumina; in situ EXAFS(+);

D O I：

10.1016/S0926-860X(99)00263-X

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：

An in situ EXAFS study has been done on a pre-reduced and pre-oxidised 1.16% Pt/gamma y-Al2O3 catalyst in order to determine the effect of 1% NO (balance N-2) versus temperature at atmospheric pressure on the platinum particles. Changes were observed in the crystallite morphologies from 200 degrees C due to sintering processes on the pre-reduced catalyst. On the pre-oxidised one, the phenomenon is much less pronounced. This study specifies the reactivity of platinum clusters deposited on gamma-alumina versus NO. (C) 1999 Elsevier Science B.V. All rights reserved.

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页码：139 / 145

页数：7

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