✦ LIBER ✦

Kinetic study of gas-phase reactions with CF2Cl2 and CFCl3. Analysis using the transition state theory (TST) of the chlorine atom transfer reactions by CF3 and CH3 radicals from halomethanes

✍ Scribed by R. A. Taccone; O. Salinovich; E. H. Staricco

Publisher: John Wiley and Sons
Year: 1987
Tongue: English
Weight: 573 KB
Volume: 19
Category: Article
ISSN: 0538-8066
DOI: 10.1002/kin.550190705

No coin nor oath required. For personal study only.

✦ Synopsis

The following gas-phase reactions:

(1)

( 2 )

were studied by the competitive method with CF,I as the source of radicals. The kinetic parameters obtained in the temperature range 533-613 K and 503-613 K respectively for chlorine atom transfer reactions are given by: log hl/h,"(cm3 mol-" s -") = 16.19 t 0.10) -(16900 2 100,iH log h,!k,."(cm3 mol-" s = (6.52 5 0.10) -(14890 5 1001/8

where t) = 2.303 RT (cal mol-').

The Arrhenius A values were calculated for seven chlorine atom transfer reactions (CF2CIZ, CFCL,, CCI, with CF, radicals; CF,Cl, CF,CI,, CFCI, and CCI, with CH, radicals) by using the thermochemical kinetic version of the Transition State Theory (TST).

📜 SIMILAR VOLUMES

Kinetic and thermochemical parameters of

Kinetic and thermochemical parameters of chlorine atom transfer reactions from CF3Cl, CF3CF2Cl, CF2ClCF2Cl, and CF2ClCFCl2 in gas phase

✍ R. A. Taccone; O. Salinovich; E. H. Staricco 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 568 KB

The following reactions: (1, -1) . CF, + CzFSC1 CF&l + ' CzF5 (2) (3) were studied over the temperature ranges 533-687 K, 563-663 K, and 503-613 K for the forward reactions respectively and over 683-763 K, for the back reaction. Arrhenius parameters for chlorine atom transfer were determined re

Kinetics of the reactions of halogenated

Kinetics of the reactions of halogenated methyl radicals (CF3, CF2Cl, CFCl2, and CCl3) with molecular chlorine

✍ Raimo S. Timonen; John J. Russell; David Gutman 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 570 KB

The kinetics of four gas-phase reactions involving halogenated methyl radicals (R,==CF,, CF2C1, CFCI,, and eel,) with molecular chlorine have been studied using a tuhular reactor coupled to a photoionization mass spectrometer. The radicals were homogeneously generated by the pulsed photolysis of pre

Kinetic study of the reaction of chlorin

Kinetic study of the reaction of chlorine atoms with CF3I and the reactions of CF3 radicals with O2, Cl2 and NO at 296 K

✍ E. W. Kaiser; T. J. Wallington; M. D. Hurley 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 826 KB

The kinetics of the gas-phase reaction of C1 atoms with CF31 have been studied relative to the reaction of C1 atoms with CH4 over the temperature range 271-363 K. Using k(C1 + CH4) = 9.6 X exp(-2680/RT) cm3 molecule-' s-', we derive k(C1 + CF3I) = 6.25 X lo-'' exp(-2970/RT) in which E , has units of

Kinetic mechanism of the hydrogen abstra

Kinetic mechanism of the hydrogen abstraction reactions of the chlorine atoms with CH3CF2Cl and CH3CFCl2: A dual level direct dynamics study

✍ Yue-meng Ji; Xiao-lei Zhao; Ze-sheng Li; Jing-yao Liu 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 396 KB 👁 2 views

## Abstract The mechanisms of the reactions: CH~3~CFCl~2~ + Cl (R1) and CH~3~CF~2~Cl + Cl (R2) are studied over a wide temperature range (200–3000 K) using the dual‐level direct dynamics method. The minimum energy path calculation is carried out at the MP2/6‐311G(d,p) and B3LYP/6‐311G(d,p) levels,

A kinetic study of the reaction of chlor

A kinetic study of the reaction of chlorine atoms with CF3CHCl2, CF3CH2F, CFCl2CH3, CF2ClCH3, CHF2CH3, CH3D, CH2D2, CHD3, CD4, and CD3Cl at 295±2 K

✍ T.J. Wallington; M.D. Hurley 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 484 KB

Kinetics of the gas-phase reaction of CF

Kinetics of the gas-phase reaction of CF3CF2CH2OH with OH radicals and its atmospheric lifetime

✍ L. Chen; K. Fukuda; N. Takenaka; H. Bandow; Y. Maeda 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 79 KB 👁 2 views

CF 3 CF 2 CH 2 OH is a new chlorofluorocarbon (CFC) alternative. However, there are few data about its atmospheric fate. The kinetics of its atmospheric oxidation, the OH radical reaction of CF 3 CF 2 CH 2 OH, has been investigated in a 2-liter Pyrex reactor in the temperature range of 298 ϳ 356 K u