13 research outputs found
Kinetic study of the CH
The kinetics and mechanism of the reaction CH3O2 + Br → products (1) have been studied at 298 K using the discharge flow method with detection of species by mass spectrometry. The rate constant obtained is: k1 = (4.4±0.4)×10-13 cm3 molecule-1 s-1. The major and likely unique channel leads to the formation of BrO. These results, which are the first ones for this reaction,
are compared with those of the CH3O2 + Cl reaction
Kinetic studies of OH reactions with H
The rate coefficients for the reactions of OH with H2O2, C3H8 and CH4 have been determined using a newly built pulsed laser photolysis-laser induced fluorescence (PLP-LIF) apparatus. While, the reaction of OH with H2O2 was studied at room temperature, the rate coefficients of OH reactions with CH4 and C3H8 were measured over a large range of temperature at P = 100 Torr of helium. The measured rate constant for the reaction of OH with H2O2 was k] = (1.75 ± 0.20) × 10-12 cm3 molecule-1 s-1. The kinetic data for C3H8 (k2) and CH4 (k3) were used to derive the Arrhenius expressions (in cm3 molecule-1 S-1) : k2 = (9.81 ± 0.11) × 10-12 exp[-(650 ± 30)/T] between 233 and 363 K, and k3 = (2.56 ± 0.53) × 10-12 exp[-(1765 ± 146)/T] between 233 and 343 K. The results obtained for k1 and k2 provide a validation of the PLP-LIF technique and those for k3 support the low value recently published, which has an important atmospheric impact
Intraepidermal Nerve Fiber Analysis in Human Patients and Animal Models of Peripheral Neuropathy: A Comparative Review
Etudes cinetiques de reactions elementaires d'oxydation d'especes soufrees contribuant a la pollution de fond
CNRS-CDST / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc
Etude cinetique de la reaction BrO + CIO intervenant dans les cycles catalytiques de consommation de l'ozone stratospherique par les composes bromes
CNRS RP 185 (2300) / INIST-CNRS - Institut de l'Information Scientifique et TechniqueSIGLEFRFranc
Etudes cinetiques de reactions d'especes halogenees d'interet atmospherique en atmosphere marine atlantique
SIGLECNRS RP 185 (2319) / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc