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Garavagno MDLA, Hernández FJ, Jara-Toro RA, Pino GA. Understanding the active role of water in laboratory chamber studies of reactions of the OH radical with alcohols of atmospheric relevance. Phys Chem Chem Phys 2024; 26:12745-12752. [PMID: 38619305 DOI: 10.1039/d3cp05667h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
In this work, we studied the reactions of three cyclic aliphatic alcohols with OH at room temperature, atmospheric pressure and different humidities in a Teflon reaction chamber. It was determined that the lower the solubility of the alcohol in water, the larger the effect of the humidity on the acceleration of the reaction. This experimental evidence allows suggesting that the acceleration is due to the reaction of the co-adsorbed reactants at the air-water interface of a thin water film deposited on the Teflon walls of the reaction chamber, instead of between co-reactants dissolved in the water film or due to gas phase catalysis as previously suggested. Therefore, formation of thin water films on different surfaces could have some implications on the tropospheric chemistry of these alcohols in the tropical regions of the planet with high humidity.
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Affiliation(s)
- María de Los A Garavagno
- INFIQC: Instituto de Investigaciones en Físico-Química de Córdoba (CONICET - UNC), Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina.
- Departamento de Fisicoquímica, Fac. de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina
- Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina
| | - Federico J Hernández
- INFIQC: Instituto de Investigaciones en Físico-Química de Córdoba (CONICET - UNC), Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina.
- Departamento de Fisicoquímica, Fac. de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina
- Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina
| | - Rafael A Jara-Toro
- INFIQC: Instituto de Investigaciones en Físico-Química de Córdoba (CONICET - UNC), Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina.
- Departamento de Fisicoquímica, Fac. de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina
- Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina
| | - Gustavo A Pino
- INFIQC: Instituto de Investigaciones en Físico-Química de Córdoba (CONICET - UNC), Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina.
- Departamento de Fisicoquímica, Fac. de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina
- Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Pabellón Argentina, Ciudad Universitaria, Córdoba 5000, Argentina
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2
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Upadhyaya HP. Theoretical study on the gas phase hydroxyl radical reaction with tetrahydrothiophene, tetrahydrofuran, thiophene and furan. Chem Phys Lett 2023. [DOI: 10.1016/j.cplett.2023.140385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
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3
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Illés Á, Rózsa ZB, Thangaraj R, Décsiné Gombos E, Dóbé S, Giri BR, Szőri M. An experimental and theoretical kinetic study of the reactions of hydroxyl radicals with tetrahydrofuran and two deuterated tetrahydrofurans. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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4
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Viegas LP. Simplified Protocol for the Calculation of Multiconformer Transition State Theory Rate Constants Applied to Tropospheric OH-Initiated Oxidation Reactions. J Phys Chem A 2021; 125:4499-4512. [PMID: 33902279 DOI: 10.1021/acs.jpca.1c00683] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chemical kinetics plays a fundamental role in the understanding and modeling of tropospheric chemical processes, one of the most important being the atmospheric degradation of volatile organic compounds. These potentially harmful molecules are emitted into the troposphere by natural and anthropogenic sources and are chemically removed by undergoing oxidation processes, most frequently initiated by reaction with OH radicals, the atmosphere's "detergent". Obtaining the respective rate constants is therefore of critical importance, with calculations based on transition state theory (TST) often being the preferred choice. However, for molecules with rich conformational variety, a single-conformer method such as lowest-conformer TST is unsuitable while state-of-the-art TST-based methodologies easily become unmanageable. In this Feature Article, the author reviews his own cost-effective protocol for the calculation of bimolecular rate constants of OH-initiated reactions in the high-pressure limit based on multiconformer transition state theory. The protocol, which is easily extendable to other oxidation reactions involving saturated organic molecules, is based on a variety of freeware and open-source software and tested against a series of oxidation reactions of hydrofluoropolyethers, computationally very challenging molecules with potential environmental relevance. The main features, advantages and disadvantages of the protocol are presented, along with an assessment of its predictive utility based on a comparison with experimental rate constants.
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Affiliation(s)
- Luís P Viegas
- Aarhus Institute of Advanced Studies, Aarhus University, Høegh-Guldbergs Gade 6B, Buildings 1630-1632, Aarhus 8000, Denmark
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5
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Viegas LSP, Jensen F. Reactivity of α,ω-Dihydrofluoropolyethers toward OH Predicted by Multiconformer Transition State Theory and the Interacting Quantum Atoms Approach. J Phys Chem A 2020; 124:3460-3470. [PMID: 32242667 DOI: 10.1021/acs.jpca.0c02911] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report rate constants for the tropospheric reaction between the OH radical and α,ω-dihydrofluoropolyethers, which represent a specific class of the hydrofluoropolyethers family with the formula HF2C(OCF2CF2)p(OCF2)qOCF2H. Four cases were considered: p0q2, p0q3, p1q0, and p1q1 (pxqy denoting p = x and q = y) with the calculations performed by a cost-effective protocol developed for bimolecular hydrogen-abstraction reactions. This protocol is based on multiconformer transition state theory and relies on computationally accessible M08-HX/apcseg-2//M08-HX/pcseg-1 calculations. Within the protocol's approximations, the results show that (1) the calculated rate constants are within a factor of five of the experimental results (p1q0 and p1q1) and (2) the chain length and composition have a negligible effect on the rate constants, which is consistent with the experimental work. The interacting quantum atoms energy decomposition scheme is used to analyze the observed trends and extract chemical information related to the imaginary frequencies and barrier heights that are key parameters controlling the reactivity of the reaction. The intramolecular exchange-correlation contributions in the reactants and transition states were found to be the dominating factor.
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Affiliation(s)
- Luı S P Viegas
- Aarhus Institute of Advanced Studies, Aarhus University, Høegh-Guldbergs Gade 6B, Buildings 1630-1632, Aarhus 8000, Denmark
| | - Frank Jensen
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
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6
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Fan C, Wang W, Shi B, Chen Y, Wang K, Zhang W, Sun Z, Ge M. A Combined Experimental and Theoretical Study on the Gas Phase Reaction of OH Radicals with Ethyl Propyl Ether. J Phys Chem A 2020; 124:721-730. [PMID: 31917920 DOI: 10.1021/acs.jpca.9b10742] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of ethyl propyl ether (EnPE) with OH radicals was studied using proton-transfer-reaction mass spectrum (PTR-MS), and the rate constant was measured at 298 K and atmospheric pressure using the relative rate method: kexp(OH+EnPE) = (1.13 ± 0.09) × 10-11 cm3 molecules-1 s-1. In addition, a parallel theoretical study was performed using the traditional transition state theory (TST) with a tunnelling effect correction in combination at M05-2X method with two basis sets, 6-311++G(d,p) and aug-cc-pVTZ. According to these calculations, H atom abstraction occurs more favorably from the methylene group adjacent to the -O- bond than from the other groups. The theoretical calculation of the total rate constant of the reaction of EnPE with OH radicals was consistent with the experimental values. The gas-phase products indicated that the major products observed were ethyl formate, ethyl propionate, propionic acid. Combined with the experimental and theoretical results, the possible reaction mechanisms were proposed and discussed. The atmospheric implications of the studied reaction are presented, and the lifetime of EnPE in the presence of OH radicals was evaluated to be approximately 1 day.
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Affiliation(s)
- Cici Fan
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,College of Chemistry and Material Science , Hebei Normal University , Shijiazhuang 050024 , China
| | - Weigang Wang
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Bo Shi
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,College of Chemistry and Material Science , Hebei Normal University , Shijiazhuang 050024 , China
| | - Yan Chen
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Ke Wang
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Wenyu Zhang
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Zheng Sun
- College of Chemistry and Material Science , Hebei Normal University , Shijiazhuang 050024 , China
| | - Maofa Ge
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , P. R. China.,University of Chinese Academy of Sciences , Beijing 100049 , P. R. China.,Center for Excellence in Region¶al Atmospheric Environment , Institute of Urban Environment, Chinese Academy of Sciences , Xiamen , 361021 , P. R. China
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7
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Davis MM, Weidman JD, Abbott AS, Douberly GE, Turney JM, Schaefer HF. Characterization of the 2-methylvinoxy radical + O2 reaction: A focal point analysis and composite multireference study. J Chem Phys 2019; 151:124302. [DOI: 10.1063/1.5113800] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Affiliation(s)
- Matthew M. Davis
- Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | - Jared D. Weidman
- Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | - Adam S. Abbott
- Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | - Gary E. Douberly
- Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | - Justin M. Turney
- Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, USA
| | - Henry F. Schaefer
- Center for Computational Quantum Chemistry, University of Georgia, Athens, Georgia 30602, USA
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8
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Viegas LP. Exploring the Reactivity of Hydrofluoropolyethers toward OH through a Cost-Effective Protocol for Calculating Multiconformer Transition State Theory Rate Constants. J Phys Chem A 2018; 122:9721-9732. [DOI: 10.1021/acs.jpca.8b08970] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luís P. Viegas
- Aarhus Institute of Advanced Studies, Aarhus University, Høegh-Guldbergs Gade 6B, Buildings 1630-1632, Aarhus 8000, Denmark
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9
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Zhu J, Wang S, Tsona NT, Jiang X, Wang Y, Ge M, Du L. Gas-Phase Reaction of Methyl n-Propyl Ether with OH, NO3, and Cl: Kinetics and Mechanism. J Phys Chem A 2017; 121:6800-6809. [DOI: 10.1021/acs.jpca.7b06877] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianqiang Zhu
- Environment
Research Institute, Shandong University, Ji’nan 250100, China
- Shenzhen
Research Institute, Shandong University, Shenzhen 518057, China
| | - Shuyan Wang
- Environment
Research Institute, Shandong University, Ji’nan 250100, China
| | - Narcisse T. Tsona
- Environment
Research Institute, Shandong University, Ji’nan 250100, China
| | - Xiaotong Jiang
- Environment
Research Institute, Shandong University, Ji’nan 250100, China
| | - Yifeng Wang
- Key Lab of Colloid
and Interface Science of the Education Ministry, Department
of Chemistry and Chemical Engineering, Shandong University, Ji’nan 250100, China
| | - Maofa Ge
- Beijing
National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory
for Structural Chemistry of Unstable and Stable Species, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Lin Du
- Environment
Research Institute, Shandong University, Ji’nan 250100, China
- Shenzhen
Research Institute, Shandong University, Shenzhen 518057, China
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10
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Antiñolo M, Ocaña AJ, Aranguren JP, Lane SI, Albaladejo J, Jiménez E. Atmospheric degradation of 2-chloroethyl vinyl ether, allyl ether and allyl ethyl ether: Kinetics with OH radicals and UV photochemistry. CHEMOSPHERE 2017; 181:232-240. [PMID: 28441613 DOI: 10.1016/j.chemosphere.2017.04.053] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 06/07/2023]
Abstract
Unsaturated ethers are oxygenated volatile organic compounds (OVOCs) emitted by anthropogenic sources. Potential removal processes in the troposphere are initiated by hydroxyl (OH) radicals and photochemistry. In this work, we report for the first time the rate coefficients of the gas-phase reaction with OH radicals (kOH) of 2-chloroethyl vinyl ether (2ClEVE), allyl ether (AE), and allyl ethyl ether (AEE) as a function of temperature in the 263-358 K range, measured by the pulsed laser photolysis-laser induced fluorescence technique. No pressure dependence of kOH was observed in the 50-500 Torr range in He as bath gas, while a slightly negative T-dependence was observed. The temperature dependent expressions for the rate coefficients determined in this work are: The estimated atmospheric lifetimes (τOH) assuming kOH at 288 K were 3, 2, and 4 h for 2ClEVE, AE and AEE, respectively. The kinetic results are discussed in terms of the chemical structure of the unsaturated ethers by comparison with similar compounds. We also report ultraviolet (UV) and infrared (IR) absorption cross sections (σλ and σ(ν˜), respectively). We estimate the photolysis rate coefficients in the solar UV actinic region to be less than 10-7 s-1, implying that these compounds are not removed from the atmosphere by this process. In addition, from σ(ν˜) and τOH, the global warming potential of each unsaturated ether was calculated to be almost zero. A discussion on the atmospheric implications of the titled compounds is presented.
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Affiliation(s)
- M Antiñolo
- Departamento de Química Física, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Avda. Camilo José Cela, 1B, Ciudad Real, 13071, Spain; Instituto de Investigación en Combustión y Contaminación Atmosférica, Universidad de Castilla-La Mancha, Camino de Moledores s/n, Ciudad Real, 13071, Spain
| | - A J Ocaña
- Departamento de Química Física, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Avda. Camilo José Cela, 1B, Ciudad Real, 13071, Spain
| | - J P Aranguren
- Instituto de Investigaciones en Fisicoquímica de Córdoba, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, Pabellón Argentina, Ala 1, Córdoba, 5000, Argentina
| | - S I Lane
- Instituto de Investigaciones en Fisicoquímica de Córdoba, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Centro Láser de Ciencias Moleculares, Universidad Nacional de Córdoba, Ciudad Universitaria, Pabellón Argentina, Ala 1, Córdoba, 5000, Argentina
| | - J Albaladejo
- Departamento de Química Física, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Avda. Camilo José Cela, 1B, Ciudad Real, 13071, Spain; Instituto de Investigación en Combustión y Contaminación Atmosférica, Universidad de Castilla-La Mancha, Camino de Moledores s/n, Ciudad Real, 13071, Spain
| | - E Jiménez
- Departamento de Química Física, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Avda. Camilo José Cela, 1B, Ciudad Real, 13071, Spain; Instituto de Investigación en Combustión y Contaminación Atmosférica, Universidad de Castilla-La Mancha, Camino de Moledores s/n, Ciudad Real, 13071, Spain.
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11
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Sulbaek Andersen MP, Svendsen SB, Østerstrøm FF, Nielsen OJ. Atmospheric Chemistry of CH3CH2OCH3: Kinetics and Mechanism of Reactions with Cl Atoms and OH Radicals. INT J CHEM KINET 2016. [DOI: 10.1002/kin.21051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mads P. Sulbaek Andersen
- Department of Chemistry and Biochemistry; California State University Northridge; Northridge CA 91330-8262
- Copenhagen Center for Atmospheric Research; Department of Chemistry; University of Copenhagen; 2100 Copenhagen Denmark
| | - Sissel Bjørn Svendsen
- Copenhagen Center for Atmospheric Research; Department of Chemistry; University of Copenhagen; 2100 Copenhagen Denmark
| | - Freja From Østerstrøm
- Copenhagen Center for Atmospheric Research; Department of Chemistry; University of Copenhagen; 2100 Copenhagen Denmark
| | - Ole John Nielsen
- Copenhagen Center for Atmospheric Research; Department of Chemistry; University of Copenhagen; 2100 Copenhagen Denmark
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12
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Andersen C, Nielsen OJ, Østerstrøm FF, Ausmeel S, Nilsson EJK, Sulbaek Andersen MP. Atmospheric Chemistry of Tetrahydrofuran, 2-Methyltetrahydrofuran, and 2,5-Dimethyltetrahydrofuran: Kinetics of Reactions with Chlorine Atoms, OD Radicals, and Ozone. J Phys Chem A 2016; 120:7320-6. [PMID: 27556743 DOI: 10.1021/acs.jpca.6b06618] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
FTIR smog chamber techniques were used to study the kinetics of the gas-phase reactions of Cl atoms, OD radicals, and O3 with the five-membered ring-structured compounds tetrahydrofuran (C4H8O, THF), 2-methyltetrahydrofuran (CH3C4H7O, 2-MTHF), 2,5-dimethyltetrahydrofuran ((CH3)2C4H5O, 2,5-DMTHF), and furan (C4H4O). The rate coefficients determined using relative rate methods were kTHF+Cl = (1.96 ± 0.24) × 10(-10), kTHF+OD = (1.81 ± 0.27) × 10(-11), kTHF+O3 = (6.41 ± 2.90) × 10(-21), k2-MTHF+Cl = (2.65 ± 0.43) × 10(-10), k2-MTHF+OD = (2.41 ± 0.51) × 10(-11), k2-MTHF+O3 = (1.87 ± 0.82) × 10(-20), k2,5-DMTHF+OD = (4.56 ± 0.68) × 10(-11), k2,5-DMTHF+Cl = (2.84 ± 0.34) × 10(-10), k2,5-DMTHF+O3 = (4.58 ± 2.18), kfuran+Cl = (2.39 ± 0.27) × 10(-10), and kfuran+O3 = (2.60 ± 0.31) × 10(-18) molecules cm(-3) s(-1). Rate coefficients of the reactions with ozone were also determined using the absolute rate method under pseudo-first-order conditions. OD radicals, in place of OH radicals, were produced from CD3ONO to avoid spectral overlap of isopropyl and methyl nitrite with the reactants. The kinetics of OD radical reactions are expected to resemble the kinetics of OH radical reactions, and the rate coefficients of the reactions with OD radicals were used to calculate the atmospheric lifetimes with respect to reactions with OH radicals. The lifetimes of THF, 2-MTHF, and 2,5-DMTHF are approximately 15, 12, and 6 h, respectively.
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Affiliation(s)
- Christina Andersen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Ole John Nielsen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Freja F Østerstrøm
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Stina Ausmeel
- Combustion Physics, Lund University , Professorgatan 1 SE-221 00, Lund, Sweden
| | - Elna J K Nilsson
- Combustion Physics, Lund University , Professorgatan 1 SE-221 00, Lund, Sweden
| | - Mads P Sulbaek Andersen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen , Universitetsparken 5, 2100 Copenhagen, Denmark.,Department of Chemistry and Biochemistry, California State University Northridge , 18111 Nordhoff Street, Northridge, California 91330-8262, United States
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13
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Paraskevas PD, Sabbe MK, Reyniers MF, Papayannakos NG, Marin GB. Group Additive Kinetics for Hydrogen Transfer Between Oxygenates. J Phys Chem A 2015; 119:6961-80. [DOI: 10.1021/acs.jpca.5b01668] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Paschalis D. Paraskevas
- Laboratorium
voor Chemische Technologie, Universiteit Gent, Technologiepark 914 9052, Zwijnaarde, Belgium
- National Technical University of Athens 9, Heroon Politechniou Str., 15780 Athens, Greece
| | - Maarten K. Sabbe
- Laboratorium
voor Chemische Technologie, Universiteit Gent, Technologiepark 914 9052, Zwijnaarde, Belgium
| | - Marie-Françoise Reyniers
- Laboratorium
voor Chemische Technologie, Universiteit Gent, Technologiepark 914 9052, Zwijnaarde, Belgium
| | - Nikos G. Papayannakos
- National Technical University of Athens 9, Heroon Politechniou Str., 15780 Athens, Greece
| | - Guy B. Marin
- Laboratorium
voor Chemische Technologie, Universiteit Gent, Technologiepark 914 9052, Zwijnaarde, Belgium
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14
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Shannon RJ, Caravan RL, Blitz MA, Heard DE. A combined experimental and theoretical study of reactions between the hydroxyl radical and oxygenated hydrocarbons relevant to astrochemical environments. Phys Chem Chem Phys 2014; 16:3466-78. [DOI: 10.1039/c3cp54664k] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Rate coefficients for the reactions of the hydroxyl radical with acetone and dimethyl ether increase dramatically at very low temperatures.
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Affiliation(s)
| | | | - M. A. Blitz
- School of Chemistry
- University of Leeds
- Leeds, UK
- National Centre for Atmospheric Science
- University of Leeds
| | - D. E. Heard
- School of Chemistry
- University of Leeds
- Leeds, UK
- National Centre for Atmospheric Science
- University of Leeds
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15
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Jacobs MI, Darer AI, Elrod MJ. Rate constants and products of the OH reaction with isoprene-derived epoxides. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:12868-12876. [PMID: 24144330 DOI: 10.1021/es403340g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Recent laboratory and field work has shown that isoprene-derived epoxides (IEPOX) are crucial intermediates that can explain the existence of a variety of compounds found in ambient secondary organic aerosol (SOA). However, IEPOX species are also able to undergo gas phase oxidation, which competes with the aerosol phase processing of IEPOX. In order to better quantify the atmospheric fate of IEPOX, the gas phase OH reaction rate constants and product formation mechanisms have been determined using a flow tube chemical ionization mass spectrometry technique. The new OH rate constants are generally larger than previous estimations and some features of the product mechanism are well predicted by the Master Chemical Mechanism Version 3.2 (MCM v3.2), while other features are at odds with MCM v3.2. Using a previously proposed kinetic model for the quantitative prediction of the atmospheric fate of IEPOX, it is found that gas phase OH reaction is an even more dominant fate for chemical processing of IEPOX than previously suggested. The present results suggest that aerosol phase processing of IEPOX will be competitive with gas phase OH oxidation only under SOA conditions of high liquid water content and low pH.
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Affiliation(s)
- Michael I Jacobs
- Department of Chemistry and Biochemistry, Oberlin College , 119 Woodland Street, Oberlin, Ohio 44074, United States
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Reaction of Dimethyl Ether with Hydroxyl Radicals: Kinetic Isotope Effect and Prereactive Complex Formation. J Phys Chem A 2013; 117:8343-51. [DOI: 10.1021/jp405724a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Butkovskaya NI, Setser DW. Infrared chemiluminescence from water-forming reactions: Characterization of dynamics and mechanisms. INT REV PHYS CHEM 2010. [DOI: 10.1080/0144235021000033381] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- N. I. Butkovskaya
- a Institute of Chemical Physics , Russian Academy of Sciences , Moscow , 117334 , Russian Federation
| | - D. W. Setser
- b Department of Chemistry , Kansas State University , Manhattan , KS , 66506 , USA
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Thomas PS, Chhantyal-Pun R, Kline ND, Miller TA. The Ã-X̃ absorption of vinoxy radical revisited: Normal and Herzberg–Teller bands observed via cavity ringdown spectroscopy. J Chem Phys 2010; 132:114302. [DOI: 10.1063/1.3352976] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Zavala-Oseguera C, Alvarez-Idaboy JR, Merino G, Galano A. OH Radical Gas Phase Reactions with Aliphatic Ethers: A Variational Transition State Theory Study. J Phys Chem A 2009; 113:13913-20. [DOI: 10.1021/jp906144d] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Claudia Zavala-Oseguera
- Departamento de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, Facultad de Química, Departamento de Física y Química Teórica, Universidad Nacional Autónoma de México, México DF 04510, and Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C. P. 09340, México
| | - Juan R. Alvarez-Idaboy
- Departamento de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, Facultad de Química, Departamento de Física y Química Teórica, Universidad Nacional Autónoma de México, México DF 04510, and Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C. P. 09340, México
| | - Gabriel Merino
- Departamento de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, Facultad de Química, Departamento de Física y Química Teórica, Universidad Nacional Autónoma de México, México DF 04510, and Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C. P. 09340, México
| | - Annia Galano
- Departamento de Química, Universidad de Guanajuato, Noria Alta s/n C.P. 36050, Guanajuato, Gto. México, Facultad de Química, Departamento de Física y Química Teórica, Universidad Nacional Autónoma de México, México DF 04510, and Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Atlixco 186, Col. Vicentina, Iztapalapa, C. P. 09340, México
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Cook RD, Davidson DF, Hanson RK. High-Temperature Shock Tube Measurements of Dimethyl Ether Decomposition and the Reaction of Dimethyl Ether with OH. J Phys Chem A 2009; 113:9974-80. [DOI: 10.1021/jp902403n] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Robert D. Cook
- Stanford University, Department of Mechanical Engineering, 452 Escondido Mall, Stanford, California 94305
| | - David F. Davidson
- Stanford University, Department of Mechanical Engineering, 452 Escondido Mall, Stanford, California 94305
| | - Ronald K. Hanson
- Stanford University, Department of Mechanical Engineering, 452 Escondido Mall, Stanford, California 94305
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Gilman JB, Kuster WC, Goldan PD, Herndon SC, Zahniser MS, Tucker SC, Brewer WA, Lerner BM, Williams EJ, Harley RA, Fehsenfeld FC, Warneke C, de Gouw JA. Measurements of volatile organic compounds during the 2006 TexAQS/GoMACCS campaign: Industrial influences, regional characteristics, and diurnal dependencies of the OH reactivity. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008jd011525] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Dalmasso PR, Nieto JD, Taccone RA, Teruel MA, Lane SI. Rate constants for reaction of Cl atoms with hydrofluoroethers. J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1077] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ogura T, Miyoshi A, Koshi M. Rate coefficients of H-atom abstraction from ethers and isomerization of alkoxyalkylperoxy radicals. Phys Chem Chem Phys 2007; 9:5133-42. [PMID: 17878990 DOI: 10.1039/b706388a] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Group rate expressions for the hydrogen(H)-atom abstraction reactions from ethers by hydrogen atoms and hydroxyl(OH) radicals and the intramolecular hydrogen-transfer isomerization reactions of alkoxyalkylperoxy radicals, which result from the H-abstraction from ethers followed by the addition of O(2), have been evaluated based on the quantum chemical calculations and experimental data. With the relative method proposed in the present study, it was shown that the rate coefficients of the reactions, for which only poor experimental information is available, can be reliably evaluated by calculating and extracting the difference from the well-established reactions of alkane hydrocarbons. The major features on the H-abstraction reactions from O-adjacent sites of ethers compared to those from alkanes were the suppression of the activation energy due to the decrease of the C-H bond dissociation energy and non-next neighbor substituent effect from the alkyl group on the counter side of -O-. For the hydrogen transfer isomerization reactions, similar suppression of the activation energy as well as the change in the ring strain energy was found as a major feature.
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Affiliation(s)
- Teppei Ogura
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 HongoBunkyo-ku, Tokyo, 113-8656, Japan
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Aschmann SM, Long WD, Atkinson R. Temperature-Dependent Rate Constants for the Gas-Phase Reactions of OH Radicals with 1,3,5-Trimethylbenzene, Triethyl Phosphate, and a Series of Alkylphosphonates. J Phys Chem A 2006; 110:7393-400. [PMID: 16759127 DOI: 10.1021/jp061542r] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rate constants for the reactions of OH radicals with dimethyl methylphosphonate [DMMP, (CH3O)2P(O)CH3], dimethyl ethylphosphonate [DMEP, (CH3O)2P(O)C2H5], diethyl methylphosphonate [DEMP, (C2H5O)2P(O)CH3], diethyl ethylphosphonate [DEEP, (C2H5O)2P(O)C2H5], triethyl phosphate [TEP, (C2H5O)3PO] and 1,3,5-trimethylbenzene have been measured over the temperature range 278-348 K at atmospheric pressure of air using a relative rate method. alpha-Pinene (for DEMP, DEEP, TEP and 1,3,5-trimethylbenzene) and di-n-butyl ether (for DMMP and DMEP) were used as the reference compounds, and rate constants for the reaction of OH radicals with di-n-butyl ether were also measured over the same temperature range using alpha-pinene and n-decane as the reference compounds. The Arrhenius expressions obtained for these OH radical reactions (in cm3 molecule(-1) s(-1) units) are 8.00 x 10(-14)e(1470+/-132)/T for DMMP (296-348 K), 9.76 x 10(-14)e(1520+/-14)/T for DMEP (296-348 K), 4.20 x 10(-13)e(1456+/-227)/T for DEMP (296-348 K), 6.46 x 10(-13)e(1339+/-376)/T for DEEP (296-348 K), 4.29 x 10(-13)e(1428+/-219)/T for TEP (296-347 K), and 4.40 x 10(-12)e(738+/-176)/T for 1,3,5-trimethylbenzene (278-347 K), where the indicated errors are two least-squares standard deviations and do not include the uncertainties in the rate constants for the reference compounds. The measured rate constants for di-n-butyl ether are in good agreement with literature data over the temperature range studied (278-348 K).
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Affiliation(s)
- Sara M Aschmann
- Air Pollution Research Center, University of California, Riverside, California 92521, USA
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El-Nahas AM, Uchimaru T, Sugie M, Tokuhashi K, Sekiya A. Hydrogen abstraction from dimethyl ether (DME) and dimethyl sulfide (DMS) by OH radical: a computational study. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.theochem.2004.12.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Aschmann SM, Tuazon EC, Atkinson R. Atmospheric Chemistry of Diethyl Methylphosphonate, Diethyl Ethylphosphonate, and Triethyl Phosphate. J Phys Chem A 2005; 109:2282-91. [PMID: 16838998 DOI: 10.1021/jp0446938] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Rate constants for the reactions of OH radicals and NO(3) radicals with diethyl methylphosphonate [DEMP, (C(2)H(5)O)(2)P(O)CH(3)], diethyl ethylphosphonate [DEEP, (C(2)H(5)O)(2)P(O)C(2)H(5)], and triethyl phosphate [TEP, (C(2)H(5)O)(3)PO] have been measured at 296 +/- 2 K and atmospheric pressure of air using relative rate methods. The rate constants obtained for the OH radical reactions (in units of 10(-11) cm(3) molecule(-1) s(-1)) were as follows: DEMP, 5.78 +/- 0.24; DEEP, 6.45 +/- 0.27; and TEP, 5.44 +/- 0.20. The rate constants obtained for the NO(3) radical reactions (in units of 10(-16) cm(3) molecule(-1) s(-1)) were the following: DEMP, 3.7 +/- 1.1; DEEP, 3.4 +/- 1.4; and TEP, 2.4 +/- 1.4. For the reactions of O(3) with DEMP, DEEP, and TEP, an upper limit to the rate constant of <6 x 10(-20) cm(3) molecule(-1) s(-1) was determined for each compound. Products of the reactions of OH radicals with DEMP, DEEP, and TEP were investigated using in situ atmospheric pressure ionization mass spectrometry (API-MS) and, for the TEP reaction, gas chromatography with flame ionization detection (GC-FID) and in situ Fourier transform infrared (FT-IR) spectroscopy. The API-MS analyses show that the reactions are analogous, with formation of one major product from each reaction: C(2)H(5)OP(O)(OH)CH(3) from DEMP, C(2)H(5)OP(O)(OH)C(2)H(5) from DEEP, and (C(2)H(5)O)(2)P(O)OH from TEP. The FT-IR and GC-FID analyses showed that the major products (and their molar yields) from the TEP reaction are (C(2)H(5)O)(2)P(O)OH (65-82%, initial), CO(2) (80 +/- 10%), and HCHO (55 +/- 5%), together with lesser yields of CH(3)CHO (11 +/- 2%), CO (11 +/- 3%), CH(3)C(O)OONO(2) (8%), organic nitrates (7%), and acetates (4%). The probable reaction mechanisms are discussed.
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Affiliation(s)
- Sara M Aschmann
- Air Pollution Research Center, University of California, Riverside, California 92521, USA
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29
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Dalmasso PR, Taccone RA, Nieto JD, Teruel MA, Lane SI. Rate constants for the reactions of chlorine atoms with hydrochloroethers at 298 k and atmospheric pressure. INT J CHEM KINET 2005. [DOI: 10.1002/kin.20091] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Cabañas B, Baeza MT, Salgado S, Martín P, Taccone R, Martínez E. Oxidation of Heterocycles in the Atmosphere: Kinetic Study of Their Reactions with NO3 Radical. J Phys Chem A 2004. [DOI: 10.1021/jp046524t] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Beatriz Cabañas
- Departamento de Química Física, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071, Ciudad-Real, Spain, and Departamento de Fisicoquímica, Facultad de Químicas, Universidad Nacional de Cordoba, Cordoba, Argentina
| | - M. Teresa Baeza
- Departamento de Química Física, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071, Ciudad-Real, Spain, and Departamento de Fisicoquímica, Facultad de Químicas, Universidad Nacional de Cordoba, Cordoba, Argentina
| | - Sagrario Salgado
- Departamento de Química Física, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071, Ciudad-Real, Spain, and Departamento de Fisicoquímica, Facultad de Químicas, Universidad Nacional de Cordoba, Cordoba, Argentina
| | - Pilar Martín
- Departamento de Química Física, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071, Ciudad-Real, Spain, and Departamento de Fisicoquímica, Facultad de Químicas, Universidad Nacional de Cordoba, Cordoba, Argentina
| | - Raul Taccone
- Departamento de Química Física, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071, Ciudad-Real, Spain, and Departamento de Fisicoquímica, Facultad de Químicas, Universidad Nacional de Cordoba, Cordoba, Argentina
| | - Ernesto Martínez
- Departamento de Química Física, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus Universitario s/n, 13071, Ciudad-Real, Spain, and Departamento de Fisicoquímica, Facultad de Químicas, Universidad Nacional de Cordoba, Cordoba, Argentina
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Eberhard J, MüLler C, Stocker DW, Kerr JA. The photo-oxidation of diethyl ether in smog chamber experiments simulating tropospheric conditions: Product studies and proposed mechanism. INT J CHEM KINET 2004. [DOI: 10.1002/kin.550250805] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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O'Donnel SM, Sidebottom HW, Wenger JC, Mellouki A, Le Bras G. Kinetic Studies on the Reactions of Hydroxyl Radicals with a Series of Alkoxy Esters. J Phys Chem A 2004. [DOI: 10.1021/jp048782w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - J. C. Wenger
- Chemistry Department, University College Cork, Cork, Ireland
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Miller JL, McCunn LR, Krisch MJ, Butler LJ, Shu J. Dissociation of the ground state vinoxy radical and its photolytic precursor chloroacetaldehyde: Electronic nonadiabaticity and the suppression of the H+ketene channel. J Chem Phys 2004; 121:1830-8. [PMID: 15260734 DOI: 10.1063/1.1765653] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
This work is a study of the competition between the two unimolecular reaction channels available to the vinoxy radical (CH(2)CHO), C-H fission to form H+ketene, and isomerization to the acetyl radical (CH(3)CO) followed by C-C fission to form CH(3) + CO. Chloroacetaldehyde (CH(2)ClCHO) was used as a photolytic precursor to the vinoxy radical in its ground state; photodissociation of chloroacetaldehyde at 193 nm produces vinoxy radicals with internal energies spanning the G3//B3LYP calculated barriers to the two available unimolecular reaction channels. The onset of the CH(3) + CO channel, via isomerization to the acetyl radical, was found to occur at an internal energy of 41 +/- 2 kcal/mol, agreeing well with our calculated isomerization barrier of 40.8 kcal/mol. Branching to the H+ketene channel was too small to be detected; we conclude that the branching to the H+ketene channel must be at least a factor of 200 lower than what is predicted by a RRKM analysis based on our electronic structure calculations. This dramatic result may be explained in part by the presence of a conical intersection at planar geometries along the reaction coordinate leading to H+ketene, which results in electronically nonadiabatic recrossing of the transition state.
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Affiliation(s)
- Johanna L Miller
- The James Franck Institute and The Department of Chemistry, The University of Chicago, Chicago, Illinois 60637, USA
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Metropoulos A. An ab initio study of the ground states of the vinoxy radical and of its ion. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.theochem.2003.12.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Good DA, Francisco JS. Atmospheric Chemistry of Alternative Fuels and Alternative Chlorofluorocarbons. Chem Rev 2003; 103:4999-5024. [PMID: 14664641 DOI: 10.1021/cr020654l] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David A Good
- Department of Chemistry and Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, IN 47907, USA
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Guillard C, Charton N, Pichat P. Degradation mechanism of t-butyl methyl ether (MTBE) in atmospheric droplets. CHEMOSPHERE 2003; 53:469-477. [PMID: 12948530 DOI: 10.1016/s0045-6535(03)00547-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The aim of this study was to obtain information about the degradation of t-butyl methyl ether (MTBE; (CH(3))(3)C-O-CH(3)) in atmospheric water droplets (rain, clouds, fog). These water droplets contain hydrogen peroxide and iron ions, which are a source of the powerful oxidising radical OH degrees, particularly under solar irradiation (photo-Fenton reaction). MTBE was chosen for this work because of its current use as an oxygenated additive in gasoline. In this study we found that MTBE is not stable in the atmosphere. More than 15 intermediate products were identified, five of which were quantified (t-butyl formate (TBF), methyl acetate (MA), t-butyl alcohol (TBA), acetone (AC), formaldehyde). The evaluation of the disappearance kinetic of the main intermediate compounds shows the following activity pattern k((TBA))>k((MTBE))>k((TBF)),k>((AC)). Acetone was found to be about 15 times more stable than MTBE in atmospheric conditions. The degradation pathways are discussed on the basis of these identifications and on the degradation of the main intermediate products in similar conditions to MTBE.
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Affiliation(s)
- Chantal Guillard
- Laboratoire d'Application de la Chimie à l'Environnement, CNRS--Université Claude Bernard LYON 1, 69622 Cedex, Villeurbanne, France.
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Mellouki A, Le Bras G, Sidebottom H. Kinetics and Mechanisms of the Oxidation of Oxygenated Organic Compounds in the Gas Phase. Chem Rev 2003; 103:5077-96. [PMID: 14664644 DOI: 10.1021/cr020526x] [Citation(s) in RCA: 200] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- A Mellouki
- Laboratoire de Combustion et Systèmes Réactifs, Centre National de Recherche Scientifique, 1C Avenue de la recherche scientifique, 45071 Orléans Cedex 02, France
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Wu JY, Liu JY, Li ZS, Sun CC. Dual-level direct dynamics studies for the reactions of CH3OCH3 and CF3OCH3 with the OH radical. J Chem Phys 2003. [DOI: 10.1063/1.1575197] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bonard A, Daële V, Delfau JL, Vovelle C. Kinetics of OH Radical Reactions with Methane in the Temperature Range 295−660 K and with Dimethyl Ether and Methyl-tert-butyl Ether in the Temperature Range 295−618 K. J Phys Chem A 2002. [DOI: 10.1021/jp012425t] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amélie Bonard
- Laboratoire de Combustion et Systèmes Réactifs, CNRS and Université d'Orléans, 1C, avenue de la recherche scientifique, 45071 Orleans Cedex 2, France
| | - Véronique Daële
- Laboratoire de Combustion et Systèmes Réactifs, CNRS and Université d'Orléans, 1C, avenue de la recherche scientifique, 45071 Orleans Cedex 2, France
| | - Jean-Louis Delfau
- Laboratoire de Combustion et Systèmes Réactifs, CNRS and Université d'Orléans, 1C, avenue de la recherche scientifique, 45071 Orleans Cedex 2, France
| | - Christian Vovelle
- Laboratoire de Combustion et Systèmes Réactifs, CNRS and Université d'Orléans, 1C, avenue de la recherche scientifique, 45071 Orleans Cedex 2, France
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Mezyk SP, Cooper WJ, Bartels DM, O'She KE, Wu T. Radiation Chemistry of Alternative Fuel Oxygenates: Substituted Ethers. J Phys Chem A 2001. [DOI: 10.1021/jp003892y] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - David M. Bartels
- Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439
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Chandra AK, Uchimaru T. The C–H bond dissociation enthalpies of haloethers and its correlation with the activation energies for hydrogen abstraction by OH radical: A DFT study. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(00)01467-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Good DA, Francisco JS. Tropospheric Oxidation Mechanism of Dimethyl Ether and Methyl Formate. J Phys Chem A 2000. [DOI: 10.1021/jp9919718] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David A. Good
- Department of Chemistry and Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907-1393
| | - Joseph S. Francisco
- Department of Chemistry and Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907-1393
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DeMore WB, Bayes KD. Rate Constants for the Reactions of Hydroxyl Radical with Several Alkanes, Cycloalkanes, and Dimethyl Ether. J Phys Chem A 1999. [DOI: 10.1021/jp983273d] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- W. B. DeMore
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
| | - K. D. Bayes
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109
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Harry C, Arey J, Atkinson R. Rate constants for the reactions of OH radicals and Cl atoms with Di-n-Propyl ether and Di-n-Butyl ether and their deuterated analogs. INT J CHEM KINET 1999. [DOI: 10.1002/(sici)1097-4601(1999)31:6<425::aid-kin4>3.0.co;2-c] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Good DA, Francisco JS, Jain AK, Wuebbles DJ. Lifetimes and global warming potentials for dimethyl ether and for fluorinated ethers: CH3OCF3(E143a), CHF2OCHF2(E134), CHF2OCF3(E125). ACTA ACUST UNITED AC 1998. [DOI: 10.1029/98jd01880] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Brock LR, Rohlfing EA. Spectroscopic studies of the B̃ 2A′′-X̃ 2A′′ system of the jet-cooled vinoxy radical. J Chem Phys 1997. [DOI: 10.1063/1.474091] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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