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Issue 15, 2003
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Identification of oxygenated ions in premixed flames of dimethyl ether and oxygen

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Abstract

The structure of characteristic flame-ions in premixed flames of dimethyl ether and oxygen was studied by ion–molecule reactions with ammonia and collision activation with argon. The results obtained show that the flame-ions m/z 45 and m/z 47 are the methoxymethyl cation, CH3OCH2+, and protonated dimethyl ether, (CH3)2OH+. The flame-ion m/z 61 is a mixture of the trimethyloxonium ion, (CH3)3O+ and lesser amounts of protonated methyl formate and/or protonated ethyl methyl ether. The viability of an ionic mechanism to soot formation for dimethyl ether–oxygen flames is discussed on the background of ions present in the dimethyl ether flames and the reactivity of the ions.

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Article information


Submitted
20 Mar 2003
Accepted
13 Jun 2003
First published
30 Jun 2003

Phys. Chem. Chem. Phys., 2003,5, 3126-3132
Article type
Paper

Identification of oxygenated ions in premixed flames of dimethyl ether and oxygen

L. F. Østergaard, H. Egsgaard and S. Hammerum, Phys. Chem. Chem. Phys., 2003, 5, 3126
DOI: 10.1039/B303154C

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