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Temperature‐dependent kinetic study for ozonolysis of selected tropospheric alkenes
Author(s) -
Avzianova Elena V.,
Ariya Parisa A.
Publication year - 2002
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.10093
Subject(s) - chemistry , ozonolysis , isoprene , alkene , reaction rate constant , arrhenius equation , pentene , propene , ozone , double bond , heptene , photochemistry , organic chemistry , kinetics , activation energy , catalysis , polymer , physics , quantum mechanics , copolymer
Ozonolysis reactions of alkenes are suggested to play major roles in the chemistry of the troposphere. Rate constants for the gas‐phase reactions of O 3 with a series of alkenes were determined using relative rate technique based on GC/FID measurements of alkene decays. Experiments were carried out in air over the temperature range of 278–353 K at an atmospheric pressure of 760 Torr. An excess of 1,3,5‐trimethylbenzene was used as a HO radical scavenger in all experiments. Arrhenius parameters were calculated for ozonolysis of 1‐butene, 1‐pentene, 1‐hexene, 1‐heptene, 2‐methyl‐1‐butene, isobutene, trans ‐2‐butene, trans ‐2‐pentene, cis ‐2‐pentene, trans ‐2‐hexene, cis ‐2‐hexene, 3‐chloropropene, 1,1‐dichloroethene, and isoprene from temperature‐dependent studies of the rate constants. The rate constants obtained in this study are compared with previous literature data. A good linear correlation between the logarithms of the rate constants and calculated HOMO energies of selected alkenes is observed. However, no clear correlation could have been drawn for chlorinated substituted alkenes. © 2002 Wiley Periodicals, Inc. Int J Chem Kinet 34: 678–684, 2002