Combustion Chemistry of the Butane Isomers in Premixed Low-Pressure Flames

Printer-friendly versionPDF version
Zeitschrift für Physikalische Chemie
Pages: 
1029-1054
Volume: 
225
Issue: 
9-10
Date: 
Saturday, October 1, 2011
DOI: 
http://dx.doi.org/10.1524/zpch.2011.0148

The combustion chemistry of the two butane isomers represents a subset in a comprehensive description of C1–C4 hydrocarbon and oxygenated fuels. A critical examination of combustion models and their capability to predict emissions from this class of fuels must rely on high-quality experimental data that address the respective chemical decomposition and oxidation pathways, including quantitative intermediate species mole fractions. Premixed flat low-pressure (40 mbar) flames of the two butane isomers were thus studied under identical, fuel-rich (ϕ=1.71) conditions. Two independent molecular-beam mass spectrometer (MBMS) set-ups were used to provide quantitative species profiles. Both data sets, one from electron ionization (EI)-MBMS with high mass resolution and one from photoionization (PI)-MBMS with high energy resolution, are in overall good agreement. Simulations with a flame model were used to analyze the respective reaction pathways, and differences in the combustion behavior of the two isomers are discussed.

Author Name: 
Patrick Oßwald
Katharina Kohse-Höinghaus
Ulf Struckmeier
Thomas Zeuch
Lars Seidel
Larisa Leon
Fabian Mauss
Industries: 
Products: