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
| Autor: | José Albaladejo, G. El Dib, Elena Jiménez, José Cernicharo, Robin J. Shannon, J. C. Gómez Martín, María Antiñolo, Dwayne E. Heard, Rebecca L. Caravan, André Canosa, John M. C. Plane, Marcelino Agúndez, Mark A. Blitz, Bernabé Ballesteros |
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| Přispěvatelé: | University of Leeds, School of Chemistry [Leeds], Facultad de Ciencias y Tecnologias Quimicas, Universidad de Castilla-La Mancha (UCLM), Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), SyG-610256, Institut National des Sciences Appliquées de Lyon, AFOSR, Air Force Office of Scientific Research, NCAS, National Centre for Atmospheric Science, 291332, ERC, European Research Council, Allied Insurance, FA9550-16-1-0051, AFOSR, Air Force Office of Scientific Research, CSD2009-00038, CGL2013-43227-R, Ministry of Economy, MICINN, Ministerio de Ciencia e Innovación, NERC, Natural Environment Research Council, Universidad de Castilla-La Mancha = University of Castilla-La Mancha (UCLM), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
010304 chemical physics
Dimer Kinetics General Physics and Astronomy CRESU 010402 general chemistry Hydrogen atom abstraction 01 natural sciences 0104 chemical sciences [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry chemistry.chemical_compound chemistry Reagent 0103 physical sciences Physical chemistry Methanol [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Physical and Theoretical Chemistry Molecular physics |
| Zdroj: | Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2018, 20 (12), pp.8349-8354. ⟨10.1039/c7cp04561a⟩ Physical Chemistry Chemical Physics, 2018, 20 (12), pp.8349-8354. ⟨10.1039/c7cp04561a⟩ |
| ISSN: | 1463-9076 1463-9084 |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
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