Influence of modifying additives on electronic state of supported gold

被引：59

作者：

Pestryakov, AN

Lunin, VV

Kharlanov, AN

Kochubey, DI

Bogdanchikova, N

Stakheev, AY

机构：

[1] Tomsk Polytech Univ, Dept Organ Chem, Tomsk 634034, Russia

[2] Moscow MV Lomonosov State Univ, Dept Chem, Moscow 119899, Russia

[3] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[4] Ctr Ciencias Mat Condensada, Ensenada 22800, Baja California, Mexico

[5] Inst Organ Chem, Moscow 119899, Russia

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2002年 / 642卷 / 1-3期

关键词：

gold catalysts; electronic states; IR spectroscopy; UV-visible spectroscopy;

D O I：

10.1016/S0022-2860(02)00402-7

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：

Using the methods of IR spectroscopy of adsorbed CO, electron spectroscopy of diffuse reflectance, XRD, XPS, EXAFS and electron microscopy the influence of modifying additions of Ce, Zr, La and Cs oxides on the surface electronic states of supported gold have been studied. The additions of Ce and Zr oxides stabilize the ionic states of supported gold and increase the effective charge of the ions. In contrast, La and Cs oxides lower the effective charge of gold cation and favor their fast reduction. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：129 / 136

页数：8

共 29 条

[1] Au/α-Fe2O3 catalyst for water-gas shift reaction prepared by deposition-precipitation [J].