Reactions of free gold cluster cations with H2O, CH3Cl, and mixtures thereof

被引：9

作者：

Lang, Sandra M. ^{[1
]}

Bernhardt, Thorsten M. ^{[1
]}

机构：

[1] Univ Ulm, Inst Catalysis & Surface Chem, D-89069 Ulm, Germany

来源：

INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2009年 / 286卷 / 01期

关键词：

Gold; Metal clusters; Ion trap mass spectrometry; CONVERSION; METHANE; IONS;

D O I：

10.1016/j.ijms.2009.06.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The reactions of the mass-selected gas-phase gold cluster cations Au-3(+) and Au-5(+) with H2O, CH3Cl, and mixtures of these reactants were studied under well-defined multi-collision conditions in an octopole ion trap. The reaction of CH3Cl with the gold cations was found to proceed fast at room temperature, leading to the adsorption of one CH3Cl molecule at each 'corner' atom of the cluster ion. This strong adsorption hindered the coadsorption of other reactants like H2O. However, a considerable reduction of the CH3Cl partial pressure led to distinct patterns of H2O/CH3Cl coadsorption products. Furthermore, the mass spectra indicated the loss of hydrogen after the reaction of CH3Cl with Au-3(+). (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：39 / 41

页数：3

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