Orkin, V.
, Khamaganov, V.
, Martynova, L.
and Kurylo, M.
(2011),
High Accuracy Measurements of OH Reaction Rate Constants and IR and UV Absorption Spectra: Ethanol and Partially Fluorinated Ethyl Alcohols., Journal of Physical Chemistry A, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=906921
(Accessed December 15, 2024)
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High Accuracy Measurements of OH Reaction Rate Constants and IR and UV Absorption Spectra: Ethanol and Partially Fluorinated Ethyl Alcohols.
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Abstract
Rate constants for the gas phase reactions of OH radicals with ethanol and three fluorinated ethyl alcohols, CH3CH2OH (k0), CH2FCH2OH (k1), CHF2CH2OH (k2), and CF3CH2OH (k3) were measured using a flash photolysis resonance-fluorescence technique over the temperature range 220 K to 370 K. The Arrhenius plots were found to exhibit noticeable curvature for all four reactions. The temperature dependences of the rate constants can be represented by the following expressions over the indicated temperature intervals. ko(220 370 K) = 5.9810-13(T/298)1.99exp(+515/T) cm3 molecule-1 s-1. For atmospheric modeling purposes, k0(T) is essentially temperature independent below room temperature, k0(TCitation
Journal of Physical Chemistry A
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Journals
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Keywords
ethanol, hydroxyl, fluorinated ethanol, atmospheric lifetime
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Created March 4, 2011, Updated March 17, 2017