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Titel:

Turn-over frequencies of catalytic reactions on nanocatalysts measured by pulsed molecular beams and quantitative mass spectrometry

Autor(en):
Judai, Ken; Abbet, Stephane; Worz, Anke S.; Rottgen, Martin A.; Heiz, Ueli
Abstract:
We present an exptl. scheme for measuring turn-over frequencies (TOFs) and obtaining mechanistic details of catalytic processes on small clusters on surfaces with high sensitivity. The scheme uses a newly designed pulsed, piezo-elec. driven valve with extremely high pulse-to-pulse stability in combination with quant. mass spectrometry. The exptl. scheme is applied for studying the oxidn. of CO on mass-distributed palladium clusters deposited from a mol. beam onto well-characterized oxide surface...     »
Stichworte:
Oxidation (catalytic, for CO, mechanism turn-over frequencies of catalytic reactions on nanocatalysts measured by pulsed mol. beams and quant. mass spectrometry) Oxidation catalysts (for CO turn-over frequencies of catalytic reactions on nanocatalysts measured by pulsed mol. beams and quant. mass spectrometry) Clusters (metal turn-over frequencies of catalytic reactions on nanocatalysts measured by pulsed mol. beams and quant. mass spectrometry) Adsorption Catalysis Catalysts Mass spectrometry M...     »
Kongresstitel:
CAN 139:354916 67-3 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institute of Surface Chemistry and Catalysis, University of Ulm, Ulm, Germany. Journal 1387-3806 630-08-0 (Carbon monoxide) Role: CPS (Chemical process), PEP (Physical, engineering or chemical process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or reagent) (oxidn. of; turn-over frequencies of catalytic reactions on nanocatalysts measured by pulsed mol. beams and quant. mass spectrometry);...     »
Zeitschriftentitel:
Int. J. Mass Spectrom.
Jahr:
2003
Band / Volume:
229
Heft / Issue:
1-2
Seitenangaben Beitrag:
99-106
Volltext / DOI:
doi:10.1016/S1387-3806(03)00261-6
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