Comment on "Methanol dimer formation drastically enhances hydrogen abstraction from methanol by OH at low temperature" by W. Siebrand, Z. Smedarchina, E. Martínez-Núñez and A. Fernández-Ramos, Phys. Chem. Chem. Phys., 2016, 18, 22712.

Physical Chemistry Chemical Physics : PCCP
Robin J ShannonJ Cernicharo

Abstract

The article "Methanol dimer formation drastically enhances hydrogen abstraction from methanol by OH at low temperature" proposes a dimer mediated mechanism in order to explain the large low temperature rate coefficients for the OH + methanol reaction measured by several groups. It is demonstrated here theoretically that under the conditions of these low temperature experiments, there are insufficient dimers formed for the proposed new mechanism to apply. Experimental evidence is also presented to show that dimerization of the methanol reagent does not influence the rate coefficients reported under the conditions of methanol concentration used for the kinetics studies. It is also emphasised that the low temperature experiments have been performed using both the Laval nozzle expansion and flow-tube methods, with good agreement found for the rate coefficients measured using these two distinct techniques.

References

Feb 19, 2011·Physical Chemistry Chemical Physics : PCCP·Hartawan LaksmonoBarbara E Wyslouzil
Aug 22, 2012·The Journal of Physical Chemistry. a·David R GlowackiStruan H Robertson
Mar 29, 2014·The Journal of Physical Chemistry. a·J C Gómez MartínJ M C Plane
Sep 13, 2014·The Journal of Physical Chemistry. a·Rebecca L CaravanDwayne E Heard
Aug 2, 2016·Physical Chemistry Chemical Physics : PCCP·Willem SiebrandAntonio Fernández-Ramos

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Citations

Oct 9, 2018·Physical Chemistry Chemical Physics : PCCP·Octavio RonceroAlfredo Aguado
Mar 3, 2019·The Journal of Chemical Physics·Thanh Lam NguyenJohn F Stanton
Mar 15, 2019·Physical Chemistry Chemical Physics : PCCP·Antonio J OcañaElena Jiménez
Sep 24, 2020·Physical Chemistry Chemical Physics : PCCP·Sergio BlázquezElena Jiménez

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