Abstract
Reactions involving hydrogen abstraction by hydroxyl radical are an important class of reactions in subcritical and supercritical oxidation in water. However, the rates of individual hydrogen abstraction reactions are not available in the literature at the high temperatures and pressures necessary for near-critical or supercritical water oxidation. Here we present the measurements of the hydrogen abstraction from methanol by hydroxyl radical in water at temperatures from ambient to 390 °C and at 250 bar. •OH was generated by pulse radiolysis and the kinetics determined by monitoring the growth of the nitrohydroxycyclohexadienyl radical. The measured bimolecular rate constants show Arrhenius temperature dependence from ambient temperature through the supercritical region. The experimental rate constants for hydrogen abstraction from methanol by hydroxyl radical are significantly higher than the values used by a variety of researchers who have attempted to model oxidation of methanol in supercritical water ...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
