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Photooxidation of n-heptanal in air: Norrish type I and II processes and quantum yield total pressure dependency
dc.creator | Tadić, Jovan M. | |
dc.creator | Juranić, Ivan O. | |
dc.creator | Moortgat, Geert Karel | |
dc.date.accessioned | 2021-04-09T09:56:29Z | |
dc.date.available | 2021-04-09T09:56:29Z | |
dc.date.issued | 2002 | |
dc.identifier.issn | 0300-9580 | |
dc.identifier.uri | https://cer.ihtm.bg.ac.rs/handle/123456789/4426 | |
dc.description.abstract | Dilute mixtures of n-heptanal in synthetic air (up to 100 ppm) were photolyzed with fluorescent UV lamps (275-380 nm) at 298 K. The main photooxidation products, identified and quantitatively analyzed by FTIR spectroscopy, were pent-1-ene, CO, vinyl alcohol and ethanal. The photolysis rates and the absolute quantum yields φ were found to be slightly dependent on the total pressure. At 100 Torr, φ100 = 0.36±0.03, whereas at 700 Torr the total quantum yield was φ700 = 0.31± 0.01. The results may be explained by the collisional deactivation of photoexcited molecules. Two decomposition channels were identified: the radical channel C6H13CHO → C6H13 + HCO, and the molecular channel C6H13CHO → C5H10 + CH2=CHOH, having the absolute quantum yields of 0.031 and 0.118 at 700 Torr. The product CH2 = CHOH tautomerizes to ethanal. | sr |
dc.language.iso | en | sr |
dc.publisher | Royal Society of Chemistry | sr |
dc.rights | restrictedAccess | sr |
dc.source | Journal of the Chemical Society, Perkin Transactions 2 | sr |
dc.subject | Aldehydes | sr |
dc.subject | Photoexcitations | sr |
dc.subject | Air | sr |
dc.subject | Photooxidation | sr |
dc.subject | Quantum yield | sr |
dc.title | Photooxidation of n-heptanal in air: Norrish type I and II processes and quantum yield total pressure dependency | sr |
dc.type | article | sr |
dc.rights.license | ARR | sr |
dcterms.abstract | Тадић, Јован М.; Јуранић, Иван О.; Моортгат, Геерт Карел; | |
dc.citation.volume | 2 | |
dc.citation.issue | 1 | |
dc.citation.spage | 135 | |
dc.citation.epage | 140 | |
dc.identifier.doi | 10.1039/b106476m | |
dc.identifier.scopus | 2-s2.0-0036006980 | |
dc.type.version | publishedVersion | sr |