| Atmospheric chemistry of the Z and E isomers of CF3CF=CHF; kinetics, mechanisms, and products of gas-phase reactions with Cl atoms, OH radicals, and O3. | |
| | |
MedLine Citation:
|
PMID: 17850124 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
|
Smog chamber/FTIR techniques were used to study the atmospheric chemistry of the Z and E isomers of CF3CF=CHF, which we refer to as CF3CF=CHF(Z) and CF3CF=CHF(E). The rate constants k(Cl + CF3CF=CHF(Z)) = (4.36 +/- 0.48) x 10-11, k(OH + CF3CF=CHF(Z)) = (1.22 +/- 0.14) x 10-12, and k(O3 + CF3CF=CHF(Z)) = (1.45 +/- 0.15) x 10-21 cm3 molecule-1 s-1 were determined for the Z isomer of CF3CF=CHF in 700 Torr air diluent at 296 +/- 2 K. The rate constants k(Cl + CF3CF=CHF(E)) = (5.00 +/- 0.56) x 10-11, k(OH + CF3CF=CHF(E)) = (2.15 +/- 0.23) x 10-12, and k(O3 + CF3CF=CHF(E)) = (1.98 +/- 0.15) x 10-20 cm3 molecule-1 s-1 were determined for the E isomer of CF3CF=CHF in 700 Torr air diluent at 296 +/- 2 K. Both the Cl-atom and OH-radical-initiated atmospheric oxidation of CF3CF=CHF give CF3C(O)F and HC(O)F in molar yields indistinguishable from 100% for both the Z and E isomer. CF3CF=CHF(Z) has an atmospheric lifetime of approximately 18 days and a global warming potential (100 year time horizon) of approximately 6. CF3CF=CHF(E) has an atmospheric lifetime of approximately 10 days and a global warming potential (100 year time horizon) of approximately 3. CF3CF=CHF has a negligible global warming potential and will not make any significant contribution to radiative forcing of climate change. |
| | |
Authors:
|
M D Hurley; J C Ball; T J Wallington |
Related Documents
:
|
22412274 - Rare association of central pontine myelinolysis with infantile tremor syndrome. 10679034 - Bannayan-riley-ruvalcaba syndrome: spectrum of intestinal pathology including juvenile ... 17972884 - Convergent dental adaptations in pseudo-tribosphenic and tribosphenic mammals. 731674 - Power reclined wheelchair back. 2645794 - Clinical differentiation between lethal catatonia and neuroleptic malignant syndrome. 21233744 - Retrograde fiberoptic technique to avoid tracheostomy in a patient with a tracheocutane... |
Publication Detail:
|
Type: Journal Article Date: 2007-09-13 |
Journal Detail:
|
Title: The journal of physical chemistry. A Volume: 111 ISSN: 1089-5639 ISO Abbreviation: J Phys Chem A Publication Date: 2007 Oct |
Date Detail:
|
Created Date: 2007-09-27 Completed Date: 2007-11-27 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9890903 Medline TA: J Phys Chem A Country: United States |
Other Details:
|
Languages: eng Pagination: 9789-95 Citation Subset: - |
Affiliation:
|
Systems Analytics & Environmental Sciences Department, Ford Motor Company, Mail Drop SRL-3083, Dearborn, Michigan 48121-2053, USA. mhurley3@ford.com |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: All-electron first principles calculations of the ground and some low-lying excited states of BaI.
Next Document: Novel class of quinone-bearing polyamines as multi-target-directed ligands to combat Alzheimer's dis...