CO oxidation over the Pt-Rh system. 3. Reaction on a heterophase surface

被引：5
|
作者：
Kalinkin, AV [1 ]
Pashis, AV [1 ]
Bukhtiyarov, VI [1 ]
机构：
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 2003年 / 78卷 / 01期
关键词：
CO oxidation reaction; heterophase surface; platinum; rhodium;
D O I：
10.1023/A:1022522118315
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：
The reaction of the CO oxidation over a Pt-Rh heterophase surface, which represents 10-20 nm platinum particles located on a rhodium film, which in turn is deposited on an inert support, has been investigated at low pressures (P < 2x10(-5) mbar). The results are compared with the data for the clean surfaces of Pt and Rh. In the high-temperature range, the rate of CO2 formation on the heterophase surface is found to be higher than the sum of the rates on individual metals corrected by the surface area of the different metals. The nature of the synergistic effect in the. CO oxidation is discussed.
引用
收藏
页码：121 / 127
页数：7
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