Hydrogen-atom abstraction from methanol by OH

Journal Article · Wed Mar 08 23:00:00 EST 1989 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100342a049· OSTI ID:5115221

Hess, W P; Tully, F P ^[1]

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1. Sandia National Labs., Livermore, CA (USA)

Absolute rate coefficients for the reactions of OH with CH{sub 3}OH (k{sub 1}) and CD{sub 3}OH (k{sub 2}) were measured over the temperature range 293-866 K by using the laser photolysis/laser-induced fluorescence technique. The kinetic data, in the units cm{sup 3} molecule{sup {minus}1} s{sup {minus}1}, are fitted to the three-parameter expressions k{sub 1}(T) = 5.89 {times} 10{sup {minus}20}T{sup 2.65} exp(+883 cal mol{sup {minus}1}/RT) and k{sub 2}(T) = 1.28 {times} 10{sup {minus}22}T{sup 3.48} exp(+1275 cal mol{sup {minus}1}/RT). The measured kinetic isotope effect, k{sub 1}/k{sub 2}, yields insight into the branching ratio for H-atom abstraction from the methyl versus the hydroxyl site in methanol.

• OSTI ID: 5115221
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 93:5; ISSN JPCHA; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ALCOHOLS
BRANCHING RATIO
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DATA
DECOMPOSITION
DEUTERIUM COMPOUNDS
ELEMENTS
EQUATIONS
EXPERIMENTAL DATA
FLUORESCENCE
HIGH TEMPERATURE
HYDROGEN
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
ISOTOPE EFFECTS
KINETICS
LASERS
LUMINESCENCE
MEDIUM TEMPERATURE
METHANOL
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PREDICTION EQUATIONS
REACTION KINETICS
SYNTHESIS
YIELDS