University of Illinois Urbana-Champaign

Fourier transform microwave spectroscopic studies of dimethyl ether and ethylene flames

Obenchain, Daniel A.

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2277.pdf
835659.pptx

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https://hdl.handle.net/2142/96956

Description

Title
Fourier transform microwave spectroscopic studies of dimethyl ether and ethylene flames
Author(s)
Obenchain, Daniel A.
Contributor(s)
  • Hansen, Nils
  • Grabow, Jens-Uwe
  • Kohse-Höinghaus, Katharina
  • Wullenkord, Julia
Issue Date
2017-06-21
Keyword(s)
Spectroscopy as an analytical tool
Date of Ingest
  • 2017-07-27T20:15:22Z
  • 2018-01-29T23:02:21Z
Abstract
Microwave spectroscopy has been a proven technique for the detection of short-lived molecules produced from a variety of molecular sources. With the goal of observing more reactive intermediates produced in combustion reactions, the products of a home-built flat flame burner were measured on a coaxially oriented beam resonator arrangement (COBRA) Fourier transform microwave spectrometer.footnote{J.-U. Grabow, W. Stahl, H. Dreizler, Rev. Sci. Instrum. 67, 4072, 1996} The products are coupled into a molecular beam using a fast-mixing nozzle styled after the work of Gutowsky and co-workers.footnote{T. Emilsson, T. D. Klots, R. S. Ruoff, H.S. Gutowsky, J. Chem. Phys. 93, 6971, 1990}_x000d_ _x000d_ Probing the flame at various positions, the relative abundance of products can be observed as a function of flame depth. One dimensional intensity profiles are available for formaldehyde, ketene, acetaldehyde, and dimethyl ether, where either a dimethyl ether fuel or an ethylene fuel was burned in the presence of oxygen. The current arrangement allows only for stable species produced in the flame to be observed in the molecular beam. This combination of species source and detection shows promise for future work in observing new, short-lived, combustion intermediates._x000d_ _x000d_
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/96956
DOI
https://doi.org/10.15278/isms.2017.WE10
Copyright and License Information
Copyright 2017 Daniel A. Obenchain

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Abstracts & Presentations - 2017 International Symposium on Molecular Spectroscopy PRIMARY