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High Accuracy Measurements of OH Reaction Rate Constants and IR and UV Absorption Spectra: Ethanol and Partially Fluorinated Ethyl Alcohols.

Published

Author(s)

Vladimir L. Orkin, Victor Khamaganov, Larissa E. Martynova, Michael J. Kurylo III

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) = 5.9810-13(T/298)1.99exp(+515/T) cm3 molecule-1 s-1. For atmospheric modeling purposes, k0(T) is essentially temperature independent below room temperature, k0(T
Citation
Journal of Physical Chemistry A

Keywords

ethanol, hydroxyl, fluorinated ethanol, atmospheric lifetime

Citation

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 July 22, 2024)

Issues

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Created March 4, 2011, Updated March 17, 2017