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Stoßwellenuntersuchungen und Modellierung der Pyrolyse von Pentafluorethan und 2-H-Heptafluorpropan

Shock Wave and Modeling Study of the Pyrolysis of Pentafluoroethane and 2-H-Heptafluoropropane

by Elsa Tellbach née Rusch
Doctoral thesis
Date of Examination:2013-12-13
Date of issue:2014-02-20
Advisor:Prof. Dr. Jürgen Troe
Referee:Prof. Dr. Jürgen Troe
Referee:Prof. Dr. Jörg Schröder
crossref-logoPersistent Address: http://dx.doi.org/10.53846/goediss-4379

 

 

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Abstract

English

The pyrolysis of C2HF5 and C3HF7 have been studied in shock waves by monitoring die UV-absorption of CF2 at 248nm and temperatures in the range of 1400 - 2000 K. Ar was used as bath gas with concentrations in the range (2-10) x 10^-5 mol cm^-3. It is shown that the reactions are initiated by C-C bond fission and differing conclusions in the literature can be explained with falloff effects. Quantum-chemical calculations were employed to model the kinetic of primary and secondary reactions in the decomposition mechanisms.
Keywords: C2HF5, C3HF7, pyrolysis, shock tube, kinetic modeling, reaction mechanism
 

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