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Catalysis with Supported Size-selected Pt Clusters: Fundamental UHV and Applied Ambient Experiments (Springer Theses)

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In his thesis, Florian Schweinberger investigates the influence of the precise size of catalytically active species on reactivity. In order to do this he carries out studies both in UHV and under ambient conditions for supported, size-selected Platium clusters (8-68 atoms). Schweinberger probed the electronic structure, adsorption properties and reactivity of two olefins on surfaces and Pt clusters in the submonolayer range. With adsorbed trichloroethene (TCE) a possible cluster-adsorbate induced change in the electronic structure, and for ethene a low-temperature, size-dependent self-/hydrogenation was observed.In a collaborative approach, Schweinberger and colleagues investigated Pt clusters under ambient pressure conditions. They characterised the clusters at at the local and integral level and tested for temperature stability. Experiments in gas phase ?-reactors and in liquid, as part of a hybrid photocatalytic system, revealed size-dependent reactivity.Overall this thesis is not only of interest for those who want to perform similar experiments but also provides superb scientific insights for researchers in the field.
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Specificații

ISBN-13: 9783319014982
ISBN-10: 3319014986
Pagini: 244
Dimensiuni: 155 x 235 x 22 mm
Greutate: 4.91 kg
Ediția: 2014
Editura: Springer
Colecția Springer
Seria Springer Theses

Locul publicării: Cham, Switzerland

Public țintă

Research

Cuprins

Introduction.- Background and methods.- Literature survey and theory.- Experimental methods.- Ultra high vacuum.- Model catalysts under vacuum conditions.- Ambient.- Cluster catalysts under applied conditions.- Conclusion and outlook.

Textul de pe ultima copertă

In his thesis, Florian Schweinberger investigates the influence of the precise size of catalytically active species on reactivity. In order to do this he carries out studies both in UHV and under ambient conditions for supported, size-selected Platium clusters (8-68 atoms). Schweinberger probed the electronic structure, adsorption properties and reactivity of two olefins on surfaces and Pt clusters in the submonolayer range. With adsorbed trichloroethene (TCE) a possible cluster-adsorbate induced change in the electronic structure, and for ethene a low-temperature, size-dependent self-/hydrogenation was observed.In a collaborative approach, Schweinberger and colleagues investigated Pt clusters under ambient pressure conditions. They characterised the clusters at at the local and integral level and tested for temperature stability. Experiments in gas phase ?-reactors and in liquid, as part of a hybrid photocatalytic system, revealed size-dependent reactivity.Overall this thesis is not only of interest for those who want to perform similar experiments but also provides superb scientific insights for researchers in the field.

Caracteristici

Nominated as an outstanding Ph.D. thesis by the Technische Universität München, Germany
Shows new size-dependent reactions under UHV conditions on clusters and compares them to single-crystal data in the same setup
Presents various new means of characterization and applications for clusters as heterogeneous model catalysis under applied, ambient conditions
Includes results on size- and coverage-dependent catalytic reactions under ambient conditions, including measurements in ?-reactors and as part of a hybrid photocatalytic material