Laboratory studies of the ·OH-initiated photooxidation of ethyl-n-butyl ether and di-n-butyl ether

D. Johnson, J. M. Andino

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Oxygenated compounds such as ethers and alcohols are used as gasoline additives and industrial solvents. However, despite their widespread use, the atmospheric reaction mechanisms of some of these compounds are unknown. This study examines the ·OH-initiated gas-phase removal mechanisms of ethyl-n-butyl ether (ENBE) and di-n-butyl ether (DNBE) utilizing gas chromatography-mass spectrometry techniques. The primary products and molar yields from the hydroxyl-radical-initiated photooxidation of ENBE in the presence of nitric oxide were acetaldehyde (0.173 ± 0.012), ethyl formate (0.219 ± 0.033), butyraldehyde (0.076 ± 0.004), butyl formate (0.241 ± 0.009), butyl acetate (0.032 ± 0.001), and ethyl butyrate (0.0044 ± 0.0006). From the calculated molar yields, approximately 45.5% of the reacted carbon were recovered. The primary products and molar yields from the DNBE and hydroxyl radical reaction in the presence of nitric oxide were propionaldehyde (0.379 ± 0.022), butyraldehyde (0.119 ± 0.003), butyl formate (0.410 ± 0.009), and butyl butyrate (0.019 ± 0.001). Approximately 47.7% of the reacted DNBE were recovered. The chemical mechanisms are presented to explain the formation of these products. In addition, the importance of the isomerization and nitrate/nitrite formation pathways in the reactions of large ethers are discussed.

Original languageEnglish
Pages (from-to)328-341
Number of pages14
JournalInternational Journal of Chemical Kinetics
Volume33
Issue number5
DOIs
Publication statusPublished - Apr 2001

Fingerprint

Photooxidation
photooxidation
formic acid
Ether
Ethers
ethers
formates
Hydroxyl Radical
Nitric Oxide
Nitric oxide
hydroxyl radicals
nitric oxide
Gasoline
Acetaldehyde
products
Nitrites
Isomerization
Gas chromatography
Nitrates
Gas Chromatography-Mass Spectrometry

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Catalysis

Cite this

Laboratory studies of the ·OH-initiated photooxidation of ethyl-n-butyl ether and di-n-butyl ether. / Johnson, D.; Andino, J. M.

In: International Journal of Chemical Kinetics, Vol. 33, No. 5, 04.2001, p. 328-341.

Research output: Contribution to journalArticle

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