Detection of vibrationally excited O2* by variable temperature photoelectron spectroscopy

Zur Analyse und zur Optimierung zahlreicher Gasreaktionen in strömenden Systemen hat sich die Photoelektronen‐Spektroskopie bestens bewährt: So gelingt es mit dieser Echtzeit‐Meßsonde bei den meisten Pyrolysen – in Millimol‐Ansätzen und innerhalb weniger Stunden –, die Temperaturen für die verschiedenen Zersetzungskanäle zu ermitteln, die Hauptprodukte zu charakterisieren und gegebenenfalls deren Ausbeute zu verbessern. Bei geeigneter Versuchsführung lassen sich kurzlebige und/oder reaktive Moleküle wie P2, Thioformaldehyd oder Silabenzol nachweisen. Von Vorteil ist die PE‐spektroskopische Gasanalytik insbesondere bei der Suche nach Heterogen‐Katalysatoren, die innerhalb eines Tages zwischen 300 und 1300 K mit Gasgemischen wechselnder Zusammensetzung getestet werden können. PE‐Spektrometer eignen sich zum ”︁on line„‐Anschluß an Rechner; tragbare Geräte für den Laborbetrieb befinden sich in Entwicklung.

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Photoelektronen‐Spektren und Moleküleigenschaften: Echtzeit‐Gasanalytik in strömenden Systemen

Bock¹,

Solouki²

1981

Angewandte Chemie

103

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Photoelectron Spectra and Molecular Properties: Real‐Time Gas Analysis in Flow Systems

Bock

Solouki

1981

Angew. Chem. Int. Ed. Engl.

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Dedicated to Professor Heilbronner on the occasion of his 60th birthdayFor the analysis and optimization of numerous gas phase reactions in flow-systems, photoelectron spectroscopy has proven most valuable. This real-time measuring probe allows one to determine-with millimol quantities and within a few hours-the temperatures for different decomposition channels. Simultaneously, main products are characterized and, if need be, their yield can be improved. By careful performance of the experiment, short-lived and/or reactive molecules such as P2, thioformaldehyde or silabenzene can be detected. PEspectroscopic gas analysis is of particular advantage in the search for heterogeneous catalysts; they can be tested within a day using gas mixtures of varying composition over the temperature range from 300 K to 1300 K. In addition, PE-spectrometers are well-suited for on-line connection to computers; portable instruments for laboratory use are under development."Besser ist's doch wie gar nichts"

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Experimental and theoretical investigation of the photoionization of acetylene

Kreile

Schweig

Thiel

1981

Chemical Physics Letters

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Detection of vibrationally excited O2* by variable temperature photoelectron spectroscopy

Cited by 4 publications

References 10 publications

Photoelektronen‐Spektren und Moleküleigenschaften: Echtzeit‐Gasanalytik in strömenden Systemen

Photoelektronen‐Spektren und Moleküleigenschaften: Echtzeit‐Gasanalytik in strömenden Systemen

Photoelectron Spectra and Molecular Properties: Real‐Time Gas Analysis in Flow Systems

Experimental and theoretical investigation of the photoionization of acetylene

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