Cluster isolated chemical reactions: Evidence for the formation of Ba2O in oxidation reactions of barium dimers

被引：30

作者：

Gee, C ^{[1
]}

Gaveau, MA ^{[1
]}

Mestdagh, JM ^{[1
]}

Osborne, M ^{[1
]}

Sublemontier, O ^{[1
]}

Visticot, JP ^{[1
]}

机构：

[1] CEA,DSM DRECAM SPAM,CE SACLAY,F-91191 GIF SUR YVETTE,FRANCE

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1996年 / 100卷 / 32期

关键词：

D O I：

10.1021/jp960725i

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 present paper reports on a new experimental technique, the cluster isolated chemical reaction technique. A single pair of reactants (or a controlled number of reactants) is isolated on a large atomic or molecular cluster. The reactants are free to migrate and to collide with each other on the cluster surface. The collision between two reactants results in a chemical reaction and yields observable signals, the cluster playing the role of a reaction medium of finite size. The CICR technique is used here to study the reaction Ba-2 + N2O on (N-2)(8000) clusters and the reaction Ba-2 + CO2 on (Ar)(5500) clusters, Both these reactions are chemiluminescent and yield rather unstructured emission spectra. The power of the CICR method is exemplified here since it allows unambiguous determination of the emitter as Ba2O in both reactions. This allows us to identify, then, the yet unassigned chemiluminescence spectrum observed by West et al. (J. Chem. Phys. 1977, 66, 2139) in flames of Ba/CO2 and Ba/CO mixtures.

引用

页码：13421 / 13427

页数：7

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