Forskning ved Københavns Universitet - Københavns Universitet


Absolute and relative rate constants for the reactions of hydroxyl radicals and chlorine atoms with a series of aliphatic alcohols and ethers at 298 K

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  • Linda Nelson
  • Oliver Rattigan
  • Ruaidhri Neavyn
  • Howard Sidebottom
  • Jack Treacy
  • Nielsen, Ole John

Rate constants for the gas‐phase reactions of hydroxyl radicals and chlorine atoms with aliphatic alcohols and ethers have been determined at 298 ± 2 K and at a total pressure of 1 atmosphere. The OH radical rate data were obtained using both the absolute technique of pulse radiolysis combined with kinetic UV spectroscopy and a conventional photolytic relative rate method. The Cl atom rate constants were measured using only the relative rate method. Values of the rate constants in units of 10−12 cm3 molecule−1 s−1 are: (Formula Presented.) The above relative rate constants are based on the values of 퓀(OH + c‐C6H12) = 7.49 × 10−12 cm3 molecule−1 s−1 and 퓀(Cl + c‐C6H12) = 311 × 10−12 cm3 molecule−1 s−1. Attempts to corre late the trends in the rate constant data in terms of the bond dissociation energies and inductive effects are discussed.

TidsskriftInternational Journal of Chemical Kinetics
Udgave nummer11
Sider (fra-til)1111-1126
Antal sider16
StatusUdgivet - 1 jan. 1990

ID: 214272873