Experimental study of fuel decomposition and hydrocarbon growth processes for practical fuel components in nonpremixed flames: MTBE and related alkyl ethers
Mcenally, CS; Pfefferle, LD
HERO ID
1249141
Reference Type
Journal Article
Year
2004
Language
English
| HERO ID | 1249141 |
|---|---|
| In Press | No |
| Year | 2004 |
| Title | Experimental study of fuel decomposition and hydrocarbon growth processes for practical fuel components in nonpremixed flames: MTBE and related alkyl ethers |
| Authors | Mcenally, CS; Pfefferle, LD |
| Journal | International Journal of Chemical Kinetics |
| Volume | 36 |
| Issue | 6 |
| Page Numbers | 345-358 |
| Abstract | Fuel decomposition and hydrocarbon growth processes of methyl tert-butyl ether (MTBE) and related alkyl ethers have been studied experimentally in soot-producing non-premixed flames. Temperature, Cl-C12 hydrocarbons, and major species were measured in coflowing methane/air flames whose fuel was separately doped with 5000 m of MTBE, n-butyl methyl ether (NBME), sec-butyl methyl ether (SBME), ethyl tert-butyl ether (ETBE), and tert-amyl methyl ether (TAME, =1,1-dimethylpropyl methyl ether), The consumption rates of the dopants, several simple kinetic calculations, and the dependence of the observed products on fuel composition indicate that the dominant decomposition process was unimotecular dissociation, not H-atom abstraction. The dominant dissociations were four-center elimination of alcohols for the doubly branched ethers (MTBE, ETBE, and TAME) and C-O fission for the linear ether (NBME), while four-center elimination and C-O fission were comparably important for the singly branched ether (SBME). These dissociations produced alkenes which further reacted to produce alkadienes/alkynes, alkenynes, acetylenic compounds, and aromatics, The dependence of the maximum benzene mole fractions on fuel composition was consistent with benzene formation through reactions of highly-unsaturated C3 and/or C4 hydrocarbons (C3H3, n-C4H3, C4H4, n-C4H5, etc.). (C) 2004 Wiley Periodicals, Inc. |
| Doi | 10.1002/kin.20005 |
| Wosid | WOS:000221468300005 |
| Url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-3042624872&doi=10.1002%2fkin.20005&partnerID=40&md5=39c83e8396d68f460836385ceba32913 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science 000221468300005 |
| Is Public | Yes |
| Language Text | English |
| Keyword | LOW-PRESSURE PYROLYSIS; FORMATION PATHWAYS; BENZENE FORMATION; FLOW REACTOR; BUTYL ETHER; OXIDATION; METHYL; CYCLOHEXANE; COMBUSTION |
| Is Qa | No |