Temperature dependence of the OH + CINO reaction: evidence for two competing reaction channels
The temperature dependence of the reaction of OH with nitrosyl chloride, CINO, has been studied from 263 to 373 K in a fast-flow discharge system. The decay of OH in the presence of excess CINO was followed by resonance fluorescence at 309.5 nm. The total pressure was 1.05 +/- 0.05 torr in He as the carrier gas. The rate constant increases both above and below room temperature suggesting the existence of two competing reaction paths, a direct abstraction reaction, HO + CINO ..-->.. HOCl + NO (1a) and one involving formation of an intermediate complex, HO + ClNO in equilibrium (HO x ClNO)* ..-->.. HONO + Cl (1b). This supports the interpretation of the room temperature product data of Poulet and co-workers. 13 references, 4 figures, 1 table.
- Research Organization:
- California State Univ., Fullerton
- OSTI ID:
- 5897644
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:1; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ANIONS
ARRHENIUS EQUATION
CHARGED PARTICLES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
DATA
EQUATIONS
EXPERIMENTAL DATA
FLUORESCENCE
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXIDES
INFORMATION
IONS
KINETICS
LUMINESCENCE
MEDIUM TEMPERATURE
NITROGEN COMPOUNDS
NUMERICAL DATA
OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
REACTION INTERMEDIATES
REACTION KINETICS
RESONANCE FLUORESCENCE
TEMPERATURE DEPENDENCE