CO2-Activation by size-selected tantalum cluster cations (Ta1-16+): thermalization governing reaction selectivity.
Phys Chem Chem Phys
; 24(4): 2623-2629, 2022 Jan 26.
Article
em En
| MEDLINE
| ID: mdl-35029252
ABSTRACT
The reactions of tantalum cluster cations of different sizes toward carbon dioxide are studied in an ion trap under multi-collisional conditions. For all sizes studied, consecutive reactions with several CO2 molecules are observed. This reveals two different pathways, namely oxide formation and the pickup of an entire molecule. Supported by calculations of the thermochemistry of TanO+ formation upon reaction with CO2, changes in the branching ratios at a particular cluster size are related to heat effects due to the vibrational heat capacity of the clusters and the exothermicity of the reaction.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Alemanha