Promotion of Rh catalyst interfaced with TiO2

被引：18

作者：

Baranova, EA ^{[1
]}

Fóti, G ^{[1
]}

Comninellis, C ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, SB ISP UGEC, CH-1015 Lausanne, Switzerland

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2004年 / 6卷 / 02期

关键词：

catalyst promotion; metal-support interactions; rhodium catalyst; TiO2; support; selective methane oxidation;

D O I：

10.1016/j.elecom.2003.11.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The catalytic activity of Rh for the partial oxidation of methane to syngas can be markedly affected by interfacing polycrystalline Rh films with a dispersed TiO2 interlayer deposited on YSZ. High CO selectivity (near 97%) can be reached in wide range of CH4:O-2 ratio at 550 degreesC. The observed modification of catalytic activity and selectivity towards CO and H-2 production over Rh interfaced with interlayer of TiO2 is related to the lowered stability of surface Rh oxide against reduction to metallic Rh. The phenomenon may be interpreted either by electronic type strong metal-support interactions or by self-driven wireless electrochemical promotion mechanism. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：170 / 175

页数：6

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