EFFECT OF PRETREATMENT ON A PLATINIZED TIN OXIDE CATALYST USED FOR LOW-TEMPERATURE CO OXIDATION

被引：106

作者：

DRAWDY, JE ^{[1
]}

HOFLUND, GB ^{[1
]}

GARDNER, SD ^{[1
]}

YNGVADOTTIR, E ^{[1
]}

SCHRYER, DR ^{[1
]}

机构：

[1] NASA,LANGLEY RES CTR,HAMPTON,VA 23665

来源：

SURFACE AND INTERFACE ANALYSIS | 1990年 / 16卷 / 1-12期

关键词：

D O I：

10.1002/sia.740160178

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：

A commercial platinized tin oxide catalyst used for low‐temperature CO oxidation has been characterized using ion scattering spectroscopy, Auger electron spectroscopy and electron spectroscopy for chemical analysis before and after reduction in 40 Torr of CO for 1 h at various temperatures in the range 75–175°C. The reduction results in loss of surface oxygen, formation of metallic tin, conversion of platinum oxides to PtOSn and Pt(OH)2 and a small amount of metallic Pt which alloys with the tin. These results should be useful in understanding how the pretreatment temperature affects the catalytic activity of platinized tin oxide toward CO oxidation. Copyright © 1990 John Wiley & Sons Ltd.

引用

页码：369 / 374

页数：6

共 29 条

[1] A SURFACE STUDY OF THE OXIDATION OF POLYCRYSTALLINE TIN [J].