𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Atmospheric chemistry of HFC-134a: Kinetics of the decomposition of the alkoxy radical CF3CFHO

✍ Scribed by Trine E. Møgelberg; Jens Sehested; Timothy J. Wallington; Ole J. Nielsen

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
163 KB
Volume
29
Category
Article
ISSN
0538-8066

No coin nor oath required. For personal study only.

✦ Synopsis

tial . However, questions have been raised concerning the environmental impact of trifluoroacetic acid which is formed from HFC-134a in the atmosphere as a result of the following reaction sequence [7 -10].

(1)

(2)

(3) (4) Reaction (4) produces CF 3 C(O)F which is hydrolyzed to CF 3 COOH after uptake in cloud and groundwater .

📜 SIMILAR VOLUMES

Atmospheric chemistry of HFC-134a. Kinet
Atmospheric chemistry of HFC-134a. Kinetic and mechanistic study of the CF3CFHO2+NO2 reaction
✍ Trine E. Møgelberg; Ole J. Nielsen; Jens Sehested; Timothy J. Wallington; Michae 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 534 KB

A pulse radiolysis system was used to study the kinetics of the reaction of CF&FH02 with NOz. By monitoring the rate of the decay of NO\* using its absorption at 400 nm the reaction rate constant was determined to be k= (5.OkO.S) x 10-r' cm3 molecule-' s-'. A long path length Fourier-transform infra

A kinetic study of the CF3CFHO2 + NO rea
A kinetic study of the CF3CFHO2 + NO reaction and the dissociation of the CF3CFHO radical
✍ Ashish Bhatnagar; Robert W. Carr 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 582 KB

The kinetics of the reaction of CF,CFHO, radicals with NO was studied by flash photolysis-time-resolved mass spectrometry. From the kinetic growth rate of NO: molecular ions the rate coefficient of the reaction CF,CFHO, + NO -+ CF,CFHO + NO, was determined to be k = (1.31 &-0.30) X 10-l' cm3 molecul

Atmospheric chemistry of CF3C(O)O2 radic
Atmospheric chemistry of CF3C(O)O2 radicals. Kinetics of their reaction with NO2 and kinetics of the thermal decomposition of the product CF3C(O)O2NO2
✍ Timothy J. Wallington; Jens Sehested; Ole J. Nielsen 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 614 KB

A pulse radiolysis technique has been used to measure a rate constant of (6.6f 1.3) x lo-r2 cm3 molecule-' s-i for the association reaction between CF3C(0)02 radicals and NO2 at 295 K and one atmosphere total pressure of SF, diluent. A FAIR/ smog chamber system was used to study the thermal decompos

The fluorine atom initiated oxidation of
The fluorine atom initiated oxidation of CF3CFH2 (HFC-134a) studied by FTIR spectroscopy
✍ Alam S. Hasson; Christopher M. Moore; Ian W. M. Smith 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 197 KB 👁 1 views

Experiments have been carried out on the oxidation of CF 3 CFH 2 (HFC-134a). Reaction was initiated by continuous photolysis of F 2 in the near-ultraviolet. The F atoms produced abstracted a hydrogen atom from CF 3 CFH 2 initiating oxidation in gas mixtures containing O 2 and made up to a total pres