LOW-TEMPERATURE CATALYTIC ACTIVITY OF CO OXIDATION BY UNI-SIZE PT30 CLUSTER DISKS BONDED TO SILICON SUBSTRATE

被引：7

作者：

Yasumatsu, Hisato ^{[1
]}

Fukui, Nobuyuki ^{[2
]}

机构：

[1] Toyota Technol Inst, Cluster Res Lab, Ichikawa, Chiba 272001, Japan

[2] Genesis Res Inst Inc, East Tokyo Lab, Ichikawa, Chiba 272001, Japan

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 92卷 / 09期

关键词：

catalysis; kinetics; kinetics and mechanisms of reactions; surface and interfacial chemistry; surfaces; interfaces and thin films; PLATINUM CLUSTERS; SILICON(111)-7X7 SURFACE; METAL-CLUSTERS; NANOPARTICLES; REACTIVITY; CHEMISTRY; PHYSICS; OXYGEN; GOLD; MGO;

D O I：

10.1002/cjce.21987

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

We investigated catalytic activity of CO oxidation by monatomic-layered cluster disks, Pt-30, bonded to a silicon substrate by means of ultrahigh-sensitive temperature-programmed desorption (TPD) mass-spectrometry. It was found in the repeated TPD measurements with various reactant-exposure amounts that this cluster-substrate system possesses high ability of low-temperature reductive activation of oxygen molecules, which is the rate-determining step of the CO oxidation. This high-performance is explained in terms of negative charges accumulated at a subnano interface between the cluster disk and the silicon substrate surface.

引用

页码：1531 / 1534

页数：4

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