Performance and characterization of a [PtMo6]/MgO catalyst: The catalytic activity for NO-CO reactions and structural analysis by EXAFS

被引：14

作者：

Tomishige, K

Nagasawa, Y

Lee, U

Iwasawa, Y

机构：

[1] UNIV TOKYO, GRAD SCH SCI, DEPT CHEM, BUNKYO KU, TOKYO 113, JAPAN

[2] UNIV TOKYO, GRAD SCH ENGN, DEPT APPL CHEM, BUNKYO KU, TOKYO 113, JAPAN

[3] NATL FISHERIES UNIV PUSAN, DEPT CHEM, PUSAN 608737, SOUTH KOREA

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 1997年 / 70卷 / 07期

关键词：

D O I：

10.1246/bcsj.70.1607

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The catalytic property of a [PtMo6]/MgO catalyst prepared by using a [PtMo6O24](8-) precursor for NO-CO reactions and a structural analysis by means of PtL3- and Mo K-edge EXAFS spectroscopy was studied. The catalytic activity of the bimetallic ensemble catalyst appeared due to the incorporation of Pt ions into the MgO surface, where Pt4+ ions substituted Mg2+ ions in the first layer of the MgO surface. It seems that the NO-CO reaction proceeded on the Pt sites embedded in the MgO surface by a redox mechanism, whereas metallic Pt particles on MgO were inactive under the present reaction conditions, characterized by an in-situ EXAFS analysis.

引用

页码：1607 / 1614

页数：8

共 29 条

[1] PALLADIUM TUNGSTEN CATALYSTS FOR AUTOMOTIVE EXHAUST TREATMENT [J].