Multiphoton gas phase dissociation of methyl and ethyl formates
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1988
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Journal of Photochemistry and Photobiology, A: Chemistry
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The IR-multiphoton-initiated decomposition of methyl and ethyl formates
is reported. Experiments were carried out by 9.6 pm irradiation under
mildly focused conditions, with fluences of about 10 J cm-*. CO, CH4, CO*,
C2H, and CHsOH were detected for HCOOCHs while CO, CH,, CzH4, C2H,
and traces of CO2 were observed for HCOOC2H,. The product yields were
measured by quantitative gas chromatographic analyses. In HCOOC2Hs, the
dominant process is the reaction producing ethylene and CO (already
observed in pyrolysis and UV photolysis). In HCOOCH3 two presumably
unimolecular reactions seem to occur, one producing CO and CHsOH and
the other producing CH4 and CO*, in contrast with the assumed mechanisms
for pyrolysis and photolysis. The product yields can be interpreted in terms
of secondary thermal or radical reactions. The effects of inert gases were
studied. Luminescence in the focal region originating from OH -, CH-, C2 and
H,0(113) excited species was observed and its temporal behavior studied.
Como referenciar
PEREIRA, ROSANA C.L.; ISOLANI, PAULO C. Multiphoton gas phase dissociation of methyl and ethyl formates. Journal of Photochemistry and Photobiology, A: Chemistry, v. 42, n. 1, p. 51-61, 1988. DOI: 10.1016/1010-6030(88)80048-0. Disponível em: http://repositorio.ipen.br/handle/123456789/26729. Acesso em: 25 Apr 2024.
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